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  • Fatalis Weaknesses
  • Best Gear
  • Party Composition
  • Fatalis Battle Pattern
  • Other Things To Keep In Mind

Fatalis is the "true" final boss of Monster Hunter Stories 2. This titanic beast can be found at the end of the rigorous Elder's Lair. The battle with this monster is the culmination of all of your accrued skills. This colossus is truly deserving of the final encounter of the game.

Related: Monster Hunter Stories 2: How To Find Deviant Monster And Elder Dragon Eggs

Do not go into this fight lightly. You will not be able to swagger on into the Fatalis' lair and beat it with dumb luck like with many other boss encounters. Fatalis has very few weaknesses and you will have to exploit every one of them in order to come out of the battle alive.

Updated May 8, 2023: We've gone ahead and tweaked this guide to make sure all the information presented below is readable, useful, and clear.

Fatalis Weaknesses

Fatalis has a select few typing weaknesses.It is only weak to the Dragon element.

Body Part

Weakness

Head

Slash

Stomach

Slash

Tail

Slash

Legs

Piercing

Fatalis can be Poisoned, inflicted with Sleep, and Paralyzed, but it is resistant to all of these effects, meaning it will take some time for them to take effect and will most likely only take hold once, as monsters gain resistance to status effects each time they are applied.

That said, Paralysis will be the most useful in this fight; if you can, bring along any Monsties that have access to such moves or some Paralysis Knives.

Best Gear

Damage isn't as important in the Fatalis fight as sustain is. That being said, no armor available to you at this point will save you or your team from massive damage if you get hit. As a result, you will want your build to maximize damage in order to cut down the number of turns the fight takes to complete.

Weapons

Since almost all of Fatalis' limbs are weak to Slashing damage, the best bet for a weapon is going to be Purgation's Atrocity. This is the Greatsword forged by High-Rank Nergigante parts.

A Nergigante will infinitely spawn in Elder's Lair Zone 9 if you need to farm parts.

You will also need a hunting horn with the Music Skill. This skill tree gives access to the Evasion Riff ability. This ability is crucial to the fight as it allows all members of your party to completely evade all damage from the next attack.

Only a few Hunting Horns have access to this skill, but the most popular is the Madderdance. That is because it is made with Mitzune parts and is easy to acquire parts for, as well as being a powerful horn in its own right.

Armor

Armor rating is not as important at this stage in the game, as armor abilities are. The armor you should wear is Zinogre U Armor+. This armor will give a massive boost to dragon element attacks. It also increases your speed and boosts your attack and defense when at full health, which you will need to stay at for most of this fight anyway.

A Stygian Zinogre infinitely spawns in the Elder's Lair Zone 5.

Party Composition

Your Monstie party only needs to consist of three members, so long as their genes are built correctly. We want monsties that can inflict Dragon-elemental damage, and those are Stygian Zinogre, Dragon Palamute, and Devil'jho.

These Monsties are the only ones that will deal significant damage to Fatalis when they attack it. If you can manage to get a Speed, Power, and Technical Skill gene on each, you can freely switch between them when their health is low.

To make the fight easier try to get some Kinship (XL) genes onto them. This will ensure your Kinship Meter stays full at all times.

If you can manage to get all of the Monsties above, you will always have a switch in for Fatalis' attacks. However, Devil'jho and the Dragon Palamute are extremely rare. If you cannot manage this specific team, bring Monsties that have Kinship (XL) and Health Boost (XL) genes.

You will have much more flexibility if you can fill many Kinship Gauges at once. Also make sure that all Monsties have access to a Power, Speed, and Technical skill, so they can be easily swapped in.

Related: Monster Hunter Stories 2: Monster Den And Monstie Egg Guide

Fatalis Battle Pattern

Fatalis has one of the most complicated battle patterns in the game. As such, this guide will supply tables showing Fatalis' most common attacks and their counters.

Fatalis has four distinct phases in the battle. For the purposes of this guide, they will be called the Default Phase, Enraged State 1, Enraged State 2, and Enraged State 3.

Default Phase:

Fatalis Attacks

Counters

Speed

Technical

Speed

Technical

Sky Force (Single Target)

Evasion Riff, Absolute Evasion (If Targeting Player)

Speed

Technical

Speed

Technical

Hellish Flame (Whole Party)

Evasion Riff

Power

Speed

Power

Speed

Fatalis always opens the fight with two Speed attacks, so go into the fight with your Greatsword equipped and a Stygian Zinogre as your lead monstie.

After the two Speed attacks, it will follow up with either Sky Force, which hits one target, or Hellish Flame, which hits the whole party and inflicts burn. Its moves will change depending on which move was used. If Sky Force is used, it will again use two Speed attacks. If Hellish Flame is used, two Power attacks are incoming.

This is where your Hunting Horn will come in. It is very hard to tell which of these attacks is coming, and Fatalis has a number of moves that can hit the whole party. Therefore, on a Sky Force or Hellish Flame move, switch to your horn and use the Evasion Riff Skill. It will repeat this pattern until it becomes Enraged.

Enraged State 1:

Fatalis Attacks

Counters

Dragon Whip (Single Target) then Dragon Sweep (Whole Party)

Evasion Riff, Power (Only affects the first attack)

Dragon Whip / Dragon Sweep

Evasion Riff, Power

Dragon Whip / Sweep then Dragon Slam

Evasion Riff, Power

Hellish Flame or SkyForce

Evasion Riff

Fatalis' Enraged state can seem impossible to predict, but there is a very simple pattern to them once you gain an eye for it. During Enraged State 1, Fatalis will use two Technical attacks back to back. These attacks are randomly chosen between Dragon Whip, which damages a single target heavily, or Dragon Sweep, which hits the whole team for light damage and applies Bleeding.

The first Technical attack can be negated by either a Power attack or the Evasion Riff skill. The second willalways land. This means that you must choose when to strategically take damage. Typically it is best to negate the first attack with a Power attack in order to charge the Kinship Gauge and rely on your partner for healing during off turns.

After using these doubled-up attacks for three turns, it will end its Enraged state with a Dragon Slam as the second Technical move, and Sky Force or Hellish Flame will follow that. At this point, it will revert back to the Default Phase, and you can follow the pattern as normal.

Enraged State 2:

Fatalis Attacks

Counters

Sky Force then Dragon Whip / Sweep

Evasion Riff, Kinship Skill

Sky Force then Dragon Whip / Sweep

Evasion Riff, Kinship Skill

Sky Force then Dragon Whip / Sweep

Evasion Riff, Kinship Skill

Sky Force then Dust Explosion

Evasion Riff, Kinship Skill

During Enraged State 2, Fatalis will use Sky Force and follow it up with a randomly generated Technical move from the previous Enraged State. Again the second attack is unavoidable, save for using Kinship Skills.

Kinship Skills will make Fatalis skip the whole turn, but you have to make a choice when to use them, as you will most likely need to use Evasion Riff on at least one, if not two, of these other turns to survive.

The best time to use a Kinship Ability is on the fourth turn of this Enraged State. Once again, Fatalis will use Sky Force, but this time it will end the turn with a move called Dust Explosion. This heavily damages the team and has a high Blastblight inflict rate. Since it is a secondary attack, the only way to dodge it is with a Kinship Skill.

Enraged State 3:

Fatalis Attacks

Counters

Dragon Burst / Second Ability

Speed (Only Negates First Attack) Kinship Skill (Negates Both)

Dragon Burst / Second Ability

Speed, Kinship Skill

Dragon Burst / Second Ability

Speed, Kinship Skill

Dragon Burst / Dust Eruption

Speed, Kinship Skill

Dragon Burst is a Power move that can be negated with Speed attacks. Unfortunately, it always comes in a pair, so the follow-up attack is unavoidable. Dragon Burst is a fairly low-damage move, though, so if you get lucky and roll them back to back, your party can easily take the hit.

In this phase, Dragon Burst is always the first move. The second move can be pulled from any of Fatalis' previous Enraged move pools. That means that luck certainly needs to be on your side for this fight.

This phase will consist of Fatalis using Dragon Burst across four turns. Your only goal in this final phase is to get to the fourth and final turn with your whole team at three hearts.

The final Dragon Burst will be followed up by an extremely powerful move called Dust Eruption. This move seems to have high and low bounds of damage so it varies whether your party will be one-hit KO'd by this move even at full health.

If your party has three hearts to burn when this skill goes off, you can finish the fight off, as Fatalis will return to its Default State for the remainder of the battle.

Related: Monster Hunter Stories 2: Complete Monstie List And Their Riding Actions

Other Things To Keep In Mind

  • AI Companions - Having an AI companion for this fight is a must to ensure victory. We recommend bringing Avinia to the fight, as she has access to a wide range of healing items and abilities. That said, no NPC has a dragon weapon nor a dragon Monstie as their companion, so none of them will be doing huge amounts of damage to the boss.
  • Take Your Time - With so many resistances and a massive health pool, trying to brute force your way through the fight is ineffective. If your partner manages to fill their Kinship Gauge, use the free turn to heal your party or use the Pet skill to fill your own Kinship Gauge for use of future skills.
  • Pay Attention To Your Buddy - Always watch out for your ally's next move. Remember that you can negate Fatalis' skill attacks even if you and your ally's Monstie are the counters. This means that you can fill both of your Kinship Gauges at the same time, or ensure that your allied Monstie does not take damage.
  • Fatalis Is Quirky - Fatalis has a number of quirks that can interrupt the normal pattern. One is that if a Kinship Skill is used on Fatalis while Enraged, and it tries to use Sky Force or Hellish Flame, it will continue to use the move until it lands rather than skipping it. Fatalis cannot use Hellish Flame or Sky Force three times in a row, except in Eraged Phase 2. Use this to your advantage when predicting whether to use Evasion Riff or not.
  • Beware Of Kinship Skills - Kinship Skills are a great tool for restoring health and dealing tons of damage. That said, many Kinship Skills will deal very low damage to Fatalis unless they are from a Dragon element monstie. Also, after using one of these abilities, your Monstie will be unable to use skills to react properly to Fatalis' next attack. Finally, you may believe you can cheese the final Enraged State by filling all your Kinship Gauges through the fight and spamming them to force Fatalis to skip all its moves in this phase. This does not work.Enraged State 3 requires that Fatalis fires off three Dragon Bursts and finishes with its Dust Eruption skill. In other words, you could have every Monstie in your party use their Kinship Abilities, and skip six turns of damage, but Fatalis will always pick up from its last turn, and you will no longer have a way to charge the gauges.

Next: Monster Hunter Stories 2 Complete Guide And Walkthrough