Extra Slots 2 Iceborne

  1. For Monster Hunter: World on the PlayStation 4, a GameFAQs message board topic titled 'Extra slot 2 augment (rarity 10 weapon)'.
  2. V 2.0.0 - Added 3 New FBI slots (FBI3,FBI4 and FBI5) added 3 extra AMB slots (AMB4, AMB5 and AMB6, added 3 extra FIRE slots (FIRE4, FIRE5 and FIRE6) updated the addedtraffic.xml for Added Traffic 2.3, fixed AMB audio loss, some small bug fixes.

Wondering how weapon augments work in Master Rank for Monster Hunter World Iceborne?

When you augment your weapon with Extra Slots, you'll get 2 additional augment slots. This doesn't fill up any augment slot but costs rare materials & some Research Points. Strengthen Master Rank Weapons With Custom Upgrades Another new feature of Iceborne, weapons now have custom upgrades. Slot Upgrade: Adds an extra slot. Stack with other upgrades to increase the slot's level: Health Regen: Regain health as you land attacks. Stack with other upgrades to increase the amount of health regained.

Here’s a quick guide to teach you the basics of how to upgrade your favorite tools of monster destruction.

Augmenting your Master Rank weapons starts in earnest once you finish the game’s main campaign. That’s because augmenting requires gathered items and monster drops from the Guiding Lands, which isn’t unlocked until you beat Iceborne’s last boss.

© Capcom The special Guardian Armor in Monster Hunter World Iceborne for PS4, Xbox One and PC.

Before we go to the basics to augmenting Master Rank weapons in Monster Hunter World Iceborne, however, let’s address one of the common concerns raised by players.

What’s going to happen to my High Rank augments?

Upgrading High Rank weapons still works the same way that it used to. That means using specific Streamstones that are tailored to each weapon.

Once you upgrade a weapon to its Master Rank counterpart, however, all those augments get wiped out. The good news is that you get back all the mats that you used to augment that particular weapon. Note that Master Rank augmenting uses a different method as well as different mats so you can’t use those same exact materials anymore.


The changes in augmenting Master Rank weapons in Iceborne end up being a net positive, however, because you no longer have to play the grindy World slot machine for weapon-based Streamstones (though getting them from the Elder Melder is an option, too).

You will still need to grind for different materials, however, which can end up taking a lot of time. In fact, the reason this is a Weapon Augmenting 101 guide and not an advanced augmenting guide is because I don’t nearly have enough materials to upgrade weapons for multiple cycles, and that’s after playing Guiding Lands a lot. Materials also can be acquired from the material but it requires bartering other Guiding Lands materials so you'll need to go to the new island regardless.

To summarize, here are the key points for weapon upgrading:

  • Rarity 10 or higher weapons that have been upgraded to the maximum level on the weapon tree or Rarity 8 or lower weapons that have been previously augmented can be powered up through customized augmentation.
  • Iceborne adds a new augment category for increasing elemental and status damage.
  • The number of augment slots changes depending on weapon rarity. You can also upgrade a weapon to increase its number of augment slots.

Now let’s take a look at the two methods for upgrading Master Rank weapons:

Slot-based augment

This is the normal augmenting method for Iceborne and requires you to use a weapon’s built-in slots in order to perform upgrades. Instead of using Streamstones, you now use materials that you acquire from monsters and gathering spots, typically from the Guiding Lands.

This method lets you do seven types of augments, with six of those requiring a certain number of slots to activate:

Extra Slots: This augment allows you to increase the number of slots in a weapon. The first upgrade adds two augment slots.

Attack Increase: This initially requires 3 weapon slots and boosts a weapon’s raw damage. The first upgrade adds 16 points of base raw to the weapon. Using the Anjanath Lohenspire Insect Glaive as an example, the weapon’s attack was boosted from 837 to 853 after the first upgrade, an increase of about 2%. A Kadachi Vipertail II, meanwhile was boosted from 775 to 791.

Affinity Increase: This initially requires 2 weapon slots and raises the chances of inflicting a critical strike. The first upgrade increases a weapon’s affinity by 10%.

Defense Increase: This augment initially requires 1 weapon slot and grants +15 defense after the first upgrade.

Slot Upgrade: This initially requires 3 weapons slots. It adds an additional slot to your weapon for inserting jewels or decorations. The first upgrade adds a Level 1 slot.

Health Regen: This augment initially requires 3 weapon slots. It allows a hunter to recover a portion of his or her health when damaging an enemy.

Element/Status Effect Up: This initially requires 1 weapon slot and can increase either elemental or status damage depending on the weapon. The first upgrade provides a boost to your base elemental or status value of 30 points. The Lohenspire glaive, for example, saw its fire element go up from 450 to 480. The Kadachi Vipertail II also saw a 30-point increase to its Paralysis value from 240 to 270.

You can also evolve upgrade categories by continuing to upgrade a weapon. Augmenting the Kadachi Vipertail II’s status values a second time, for example, adds an additional 30-point increase in paralysis attack on top of the initial 30 points from the first upgrade.

Do note that additional upgrades require more slots. Using a Chrome Drill III, for example, the first elemental/status upgrade required 1 augment slot while the second required an additional 2 augments slots for a grand total of 3 augment slots.

Just like the previous augment system, you will also have to decide if it’s better to focus on one type of augment such as multiple levels of Health Regen, for example, or combine multiple augments such as affinity plus attack. On the plus side, you can also roll back or remove upgrades in case you’ve made a mistake or simply change your mind.

Custom Upgrades augment

This second type of upgrade ignores the slot requirement, allowing you to add any type of boost for your weapon. The catch is that it only adds incremental boosts so you will need to do it multiple times to make a noticeable difference. It also requires a lot of mats, which means you will need to do a lot of farming for monsters and materials in the Guiding Lands. Custom upgrades start with a few choices and more are unlocked as you upgrade a weapon. Here’s an example using the Chrome Drill III:

Kulu Ya Ku Mod: Slightly increases affinity. Using a Chrome Drill III, upgrading the weapon once raised its affinity from 0% to 1%.

Pukei-Pukei Mod: Slightly increases element or abnormal status damage. Using the same drill, upgrading the weapon once raised status damage by 10 points from 420 to 430.

Barroth Mod: Slightly increases attack. Using the Chrome Drill III once again, base raw attack was raised by 2 points from 598 to 600.

After using the Pukei-Pukei Mod on the weapon, the following options were unlocked.

Dodogama Mod: Works just like the Barroth Mod. Adds 2 points of base raw attack to the weapon.

Nightshade Paolumu Mod: Works just like the Kulu Ya Ku Mod. Adds 1% affinity to the weapon.

Coral Pukei-Pukei Mod: Works just like the Pukei-Pukei Mod. Adds 10 points of elemental or status damage to a weapon.

Hornetaur Mod: Adds +10 Defense to your weapon.

As with slot-based augmenting, you also have the ability to remove a custom upgrade that you’ve done if you change your mind and have your materials returned. Also note that not all weapons support custom upgrades.

© Capcom Aloy faces off against Stygian Zinogre in Monster Hunter World: Iceborne.

Weapon Augmenting 201: Rarity & materials

Now we go past the basics a bit by tackling some of the more advanced concepts regarding augments.

First off is weapon rarity level. Master Rank weapons in Iceborne range from Rarity 10 to rarity 12. Although lower-rarity weapons are typically weaker than higher-rarity weapons, they actually get more augment slots. This can make them just as viable or even more viable than alternatives with higher rarity.

The base Rarity 10 Crimson Kadachi Lion II, for example, pales in comparison to the Rarity 11 Nargacuga Baleful Night as a pierce heavy bowgun despite its jewel slot due to extra affinity and access to Non-elemental Boost. Thanks to its additional augment slots, however, the Crimson Kadachi is considered by many as arguably the better option once upgraded.

Here are the number of available augment slots for weapons based on rarity:

  • Rarity 10: 5 augment sockets, can be increased to 9
  • Rarity 11: 4 augment sockets, can be increased to 6
  • Rarity 12: 3 augment sockets, can be increased to 5

Depending on the augment you do, you will need a certain number of slots to upgrade your weapon. Here is a rundown of the slot requirements for each augment type.


  • Affinity Augment 1: 2 slots
  • Affinity Augment 2: 2 slots (4 total)
  • Affinity Augment 3: 2 slots (6 total)
  • Affinity Augment 4: 2 slots (8 total)


  • Attack Augment 1: 3 slots
  • Attack Augment 2: 2 slots (5 total)
  • Attack Augment 3: 2 slots (7 total)
  • Attack Augment 4: 2 slots (9 total)


  • Defense Augment 1: 1 slot
  • Defense Augment 2: 1 slot (2 total)
  • Defense Augment 3: 1 slot (3 total)
  • Defense Augment 4: 2 slots (5 total)


  • Health Augment 1: 3 slots
  • Health Augment 2: 2 slots (5 total)
  • Health Augment 3: 2 slots (7 total)
  • Health Augment 4: 2 slots (9 total)


  • Defense Augment 1: 1 slot
  • Defense Augment 2: 2 slots (3 total)
  • Defense Augment 3: 2 slots (5 total)
  • Defense Augment 4: 2 slots (7 total)


  • Slot Augment 1: 3 slots, adds a Level 1 deco slot
  • Slot Augment 2: 3 slots (6 total), turns additional Level 1 slot to Level 2
  • Slot Augment 3: 1 slot (7 total), turns additional Level 2 slot to Level 3
  • Slot Augment 4: 1 slot (8 total), turns additional Level 3 slot to Level 4
© Capcom The Well-done hammer from the Monster Hunter World: Iceborne Grand Appreciation Fest.

List of augment materials and how to get them

So now you’re wondering, where do I get the materials I need for augments? All I can say is, get ready to familiarize yourself with the Guiding Lands. That’s because you will need special materials for augments, including drops that only come from monsters in the special endgame island. In addition to monster drops, you will also need ores and bones that only appear in the Guiding Lands’ various regions as well. Note that some of these materials require you to level up gathering spots by constantly harvesting them.

On that note, here’s a list of the various materials that can be used for augments and which monster or gathering spot drops them. There’s more than 120 of them, which I am verifying one by one via the wiki and online searches so here’s an alphabetical list that will be updated as I check the info. Also, here's a quick note about monster threat levels.

Threat Level 1: These are your less powerful monsters such as Tzitzi-Ya-Ku, Pukei-Pukei, Barroth and Banbaro.

Threat Level 2: These are more powerful, middle-tier monsters like Zinogre, Brachydios, Diablos, Glavenus, Nargacuga, Azure Rathalos and Brute Tigrex.

Threat Level 3: The pinnacle of monster-dom. These include Rajang, Savage Deviljho, Seething Bazelgeuse, Stygian Zinogre, Silver Rathalos, Gold Rathian and Elder Dragons.

Now onward to the materials..

  • Aurora Crownhorn: Velkhana
  • Azure Mane: Lunastra
  • Blackcurl Tyranthorn: Black Diablos
  • Bloodstained Ebonhide: Savage Deviljho
  • Bloodthirsty Glimmerpelt: Rajang
  • Charged Deathly Shocker: Zinogre
  • Colorful Plume: Kulu-Ya-Ku
  • Coral Crimsonbone: Coral Region bonepiles
  • Cracked Crystal: Wildspire Region mining
  • Crackling Thunderpelt: Fulgur Anjanath
  • Crimson Blastscale: Seething Bazelgeuse
  • Dazzling Photospore+: Tzitzi-Ya-Ku
  • Decayed Crystal: Forest Region mining
  • Deepsea Crystal: Coral Region mining
  • Distorted Crystal: Rotten Region mining
  • Dragonscorched Wildbone: Volcanic Region bonepiles
  • Dragonvein Solidbone: Non-tempered large monsters
  • Effluvial Crystal: Rotten Region mining
  • Effluvial Frenzybone: Rotten Region bonepiles
  • Elder Dragonvein Bone: Elder Dragons
  • Elder Spiritvein Bone: Tempered Elder Dragons
  • Enchanting Finehide: Namielle
  • Extinction Greathorn: Ruiner Nergigante
  • Fatal Rendclaw: Odogaron
  • Fierce Dragonvein Bone: Non-tempered lower threat monster (e.g. Great Jagras, Pukei-Pukei, Anjanath, Rathian)
  • Flickering Flamepelt: Anjanath
  • Forest Crystal: Forest Region mining
  • Fragrant Poison Sac: Pukei-Pukei
  • Glossy Ebonshell: Brachydios
  • Great Spiritvein Gem: Tempered Elder Dragons
  • Guiding Coral Dragonbone: Coral Region bonepiles
  • Guiding Efflivial Crystal: Rotten Region mining
  • Guiding Forest Crystal: Forest Region mining
  • Guiding Forest Dragonbone: Forest Region bonepiles
  • Guiding Magma Crystal: Volcanic Region mining
  • Guiding Rotted Dragonbone: Rotten Region bonepiles
  • Guiding Volcanic Dragonbone: Volcanic Region bonepiles
  • Guiding Wasteland Crystal: Wildspire Region mining
  • Guiding Wasteland Dragonbone: Wildspire Region bonepiles
  • Heavy Dragonvein Bone: Non-tempered medium threat monster (e.g. Rathalos, Tigrex, Nargacuga, Glavenus, Diablos, etc.)
  • Heavy Jaw: Dodogama
  • Hellfire Crystal : Volcanic Region mining
  • Hellfire Mane: Teostra
  • Honed Tailblade: Acidic Glavenus
  • Hydrated Sac: Coral Pukei-Pukei
  • Incandescent Magmafin: Lavasioth
Slots 2 journey yahoo games© Capcom The variant (or is it subspecies?) giant Snowman from the Monster Hunter World: Iceborne Grand Appreciation Fest.
  • Inkstained Oilshell+: Radobaan
  • King's Scale: Rathalos
  • Magma Crystal: Volcanic Region mining
  • Malformed Frenzybone: Rotten Region bonepiles
  • Melted Crystal : Volcanic Region mining
  • Metallic Scute: Uragaan
  • Moonlight Scale: Gold Rathian
  • Mossy Greatbone: Forest Region bonepiles
  • Muddy Crown: Barroth
  • Night Hood: Great Girros
  • Obsidian Fur: Nightshade Paolumu
  • Pale Crystal: Coral Region mining
  • Prosperous Crystal: Forest Region mining
  • Queen's Scale: Rathian
  • Rubbery Shell: Paolumu
  • Rugged Mane: Great Jagras
  • Scorching Scale: Silver Rathalos
  • Serene Crystal: Wildspire Region mining
  • Shuddering Darkjaw: Brute Tigrex
  • Simmering Wildbone: Volcanic Region bonepiles
  • Sinister Silverpelt: Yian Garuga
  • Slumbering Greatbone: Forest Region bonepiles
  • Smoldering Tailedge: Glavenus
  • Smooth Icehide: Legiana
  • Solemn Azure Horn: Kirin
© Jason Hidalgo Hunting Uragaan with a Sticky 3 LBG mixed set in Monster Hunter World: Iceborne.
  • Soulrender Talon: Ebony Odogaron
  • Spiritvein Gem: Threat LV2 Tempered Monster
  • Spiritvein Slogbone: Threat LV1 Tempered Monster
  • Spiritvein Solidbone: Threat LV2 Tempered Monster
  • Splattered Hide: Tempered Savage Deviljho
  • Stormcall Steelwing: Kushala Daora
  • Strongman's Jaw: Tigrex
  • Tempered Azure Horn : Tempered Kirin
  • Tempered Azure Mane: Tempered Lunastra
  • Tempered Azure Scale: Tempered Azure Rathalos
  • Tempered Blastscale: Tempered Seething Bazelgeuse
  • Tempered Cathode: Tobi-Kadachi
  • Tempered Cragbone: Volcanic Region bonepiles
  • Tempered Crimson Mane: Tempered Teostra
  • Tempered Crown: Tempered Barroth
  • Tempered Crownhorn: Tempered Velkhana
  • Tempered Cutwing: Tempered Nargacuga
  • Tempered Flamepelt: Tempered Anjanath
  • Tempered Glimmerpelt: Tempered Rajang
  • Tempered Gold Scale: Tempered Gold Rathian
  • Tempered Great Horn : Tempered Banbaro
  • Tempered Green Scale: Tempered Rathian
  • Tempered Hide: Tempered Nightshade Paolumu
  • Tempered Icehide: Tempered Legiana
  • Tempered Jaw: Tempered Tigrex
© MHW Yian Garuga is perched at the Guiding Lands in Monster Hunter World Iceborne.
  • Tempered Magmafin: Tempered Lavasioth
  • Tempered Oilshell+: Tempered Radobaan
  • Tempered Pink Scale: Tempered Pink Rathian
  • Tempered Poison Sac: Tempered Pukei-Pukei
  • Tempered Red Scale: Tempered Rathalos
  • Tempered Rendclaw: Tempered Odogaron
  • Tempered Silver Scale: Tempered Silver Rathalos
  • Tempered Silverpelt: Tempered Scarred Yian Garuga
  • Tempered Steelwing: Tempered Kushala Daora
  • Tempered Tailblade: Tempered Acidic Glavenus
  • Tempered Talon: Tempered Ebony Odogaron
  • Tempered Thunderpelt: Tempered Fulgu Anjanath
  • Tempered Trancehide: Tempered Namielle
  • Tempered Twilight Fang: Tempered Blackveil Vaal Hazak
  • Twilight Crystal: Rotten Region mining
  • Twilight Fang: Blackveil Vaal Hazak
  • Twisted Bravehorn: Diablos
  • Twisted Temperhorn: Tempered Diablos
  • Vibrant Crimsonbone: Coral Region bonepiles
  • Vivid Crimsonbone: Vivid Crimsonbone
  • Volcanic Wildbone: Volcanic Region bonepiles
  • Wasteland Cragbone: Wildspire Region bonepiles
  • Wasteland Crystal: Wildspire Region mining
  • Weathered Cragbone: Wildspire Region bonepiles
  • Woodland Greatbone; Forest Region bonepiles

And there you go, the basics for augmenting Master Rank weapons in Monster Hunter World. Make sure to check our other guides and articles for Monster Hunter World: Iceborne to get your icy adventure started on the right track.

Jason Hidalgo covers business and technology for the Reno Gazette Journal, and also reviews video games as part of his Technobubble features. Follow him on Twitter @jasonhidalgo. Like this content? Support local journalism with an RGJ digital subscription.

This article originally appeared on Reno Gazette-Journal: How to augment and upgrade weapons in Monster Hunter World Iceborne Technobubble

Here are some tips for players who are stuck mid-game with certain challenges proving them a hard time or returning hunters getting ready for Iceborne.



The Botanical Research NPC in Astera can grow useful items for you to use in your journey.

Some of the useful items we have found so far:

  • Herb (for crafting Potions)
  • Honey (for crafting Mega Potions)
  • Might Seed (for attack boost or sell for instant money)
  • Flashbugs (for crafting Flash Pods)
  • Thunderbugs (foo crafting Shock Traps)

Craft Thunder and Fire Weapons

We are heading into the frozen wilds, and a number of the monsters are weak to Thunder and Fire.

For example, the Piscine Wyvern, Beotodus, is weak to Fire and Thunder, while Tigrex is weak to Thunder. Barioth is weak to Fire.

The Anjanath Weapon Tree has high raw plus fire element at the cost of negative affinity, while Rathalos weapons have great raw and decent fire element, with positive affinity to boot.

Get Those Tools

Tools consist of Mantles and Boosters. Mantles are wearable cloaks that bestow hunters with bonuses and resistances useful against certain monsters. Boosters provide you and your team helpful buffs and heals. These tools offer great utility to the squad. Poker rooms near laguna beach.

The Iceproof Mantle is invaluable as we head into Iceborne, providing extra Ice resistance and deep snow mobility.

Here are all the tools:


  • Ghillie Mantle
    • Makes you temporarily invisible to monsters
  • Vitality Mantle
    • Negates a Fixed Amount of Damage
  • Glider Mantle
    • Allows gliding, grants the power to ride strong winds. Also makes it easier to mount monsters.
  • Apothecary Mantle
    • Increases Status Buildup
  • Bandit Mantle
    • Causes Rare Trade-In Item Drops
  • Challenger Mantle
    • Aggros monsters
  • Evasion Mantle
    • Increases evasion window, grants increased attack when evading at the last second.
  • Fireproof Mantle
    • Increased Fire Res, immune to Fire Blight and Blast Blight
  • Iceproof Mantle
    • Increased Ice Res, immune to Ice Blight, improves deep snow mobility
  • Thunderproof Mantle
    • Increased Thunder Res, immune to Thunder Blight
  • Waterproof Mantle
    • Increased Water Res, immune to Water Blight, improves deep water mobility
  • Dragronproof Mantle
    • Increased Dragon Res, immune to Dragon Blight
  • Immunity Mantle
    • Removes & Nullifies abnormal status effects
  • Impact Mantle
    • Adds or improves exhaust/stun with attacks.
  • Rocksteady Mantle
    • Eliminates flinching, provides Windproof, Earplugs, and Tremor Resistance. Reduces incoming damage.
  • Temporal Mantle
    • Auto-dodge huge attacks, effectively being almost invincible. Think Ultra Instinct Goku.


  • Health Booster
    • Places a smoker that gradually restores your health.
  • Affinity Booster
    • Places a smoker that increases affinity.
  • Cleanser Booster
    • Places a smoker that removes any abnormal status effects and elemental blights

Arekkz has compiled a video on how to unlock all of the tools stated above.

Finish Those Optional Quests

As you can see above, completing optional quests net you a boatload of utility items as well as certain items for deliveries. This helps you considerably for the final push later in the game.

Get All Palico Gadgets

Your cat partner is your invaluable ally, often helping you in ways you could not imagine. Provide your Palico with more tools to diversify its usefulness.

If you’re planning on hunting alone in Iceborne, the Palico’s Coral Orchestra will help a lot. It works like a Hunting Horn, and it buffs your hunter in all sorts of ways that make the fights less punishing.

Palico Gadgets also get buffs in Iceborne. For example, the Vigorwasp Spray at Level 11 can save you from a cart once with the Vigorwasp Revival.

Subsequently, completing these will also provide you with the Tailraider Rides. This is quite useful everywhere in the game. Think Uber rides, but with lizards and skunks as your drivers.

Stock Up On Items

Gather as many consumables that you can, the Tempered Elder Dragons will burn through your potion collections faster than a drunk wizard.

Flash Pods and Dung Pods are useful to change the flow of the fight.

Dung Pods will be useful to deter monsters as invaders such as Bazelgeuse and Deviljho will start to interrupt fights at higher ranks.

Unlock The Augments

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Once you hit HR29, you’ll have a chance to receive an illusive Warrior Streamstone by completing a Threat Level 2 Tempered Monster investigation. This will allow you to augment your weapon, bestowing it with special bonuses such as follows:

  • Attack Increase (+5 True Attack Value) – Increases Attack. Stacks with other upgrades.
  • Affinity Increase (+10% Affinity) – Increases Affinity. Stacks with other upgrades.
  • Defense Increase (+10 Defense) – Increases Defense and has a chance to reduce damage taken each time you receive damage. Stacks with other upgrades.
  • Slot Upgrade – Adds an extra jewel slot. Stack with other upgrades to increase slots level.
  • Health Regen – Regain Health as you land attacks. Stack with other upgrades to increase the amount of health regained.

Only Warrior and Hero Streamstones can unlock augments for your weapons.

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Rarity 6 weapons will have 3 augmentation slots and require 1 Warrior Streamstone for each, along with some other materials. Rarity 7 weapons have 2 slots and require 2 Warrior Streamstones per slot. Rarity 8 weapons have only 1 slot that requires one Hero’s Streamstone.

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Armour can also be augmented. However, augmenting armour allows for only one type of Augment, Upgrade Limit Removal. This removes the limit and allows further upgrading through the standard method to increase the pieces defence.

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