Mortal Shell 2 Achievement Guide: How to Get 100% Achievements & Platinum Trophy

Mortal Shell 2 is the kind of game that makes you feel clever one minute and completely useless the next. After spending a lot of time with difficult action RPGs, I thought I had a pretty good idea of what to expect here. I was wrong in a few pleasant ways.

Cold Symmetry has taken the foundation of the original Mortal Shell and pushed it into a much larger, more dangerous world. The sequel keeps the brutal dark-fantasy atmosphere, but the structure is far more ambitious. Instead of moving through relatively tight areas, you’re exploring an interconnected world packed with dungeons, hidden paths, bosses, collectibles, and enough secrets to make a completionist’s life considerably harder.

That also applies to the Mortal Shell 2 achievement and trophy list. There are 53 trophies on PlayStation 5, including the Platinum, while Steam and Xbox Series X/S players have 52 achievements to collect. Getting through the story is only part of the job. A genuine 100% run asks you to explore almost everything, develop multiple Shells, collect the complete arsenal, and tackle several challenges that are much easier to miss than they first appear.

And yes, there is one particularly important rule: do not use the Slayer Seal if you’re hunting achievements.

I learned pretty quickly that Mortal Shell 2 rewards preparation more than brute force. So here’s the route I’d recommend if your goal is a complete achievement run without making the experience unnecessarily miserable.

Mortal Shell 2 Achievement Roadmap

Before Anything Else: Avoid the Slayer Seal

This is easily the most important warning in the entire guide.

The Slayer Seal makes combat more forgiving by restoring health and Resolve when you perform execution attacks. On paper, that sounds fantastic. In practice, it completely disables achievements.

For a normal playthrough, I can understand why someone would use it. Mortal Shell 2 can be vicious, especially when you’re learning enemy attack patterns and trying to understand how the new stamina-free combat system works.

But if you’re chasing the Platinum, leave it alone.

I’d recommend treating your first run as your main completion playthrough. Don’t rush from boss to boss. Mortal Shell 2 has enough hidden content that sprinting through the campaign creates more work later.

Your First Playthrough: Explore Everything

The first run should be about learning the world rather than obsessively checking every percentage counter.

Mortal Shell 2’s interconnected map is one of its biggest improvements over the original. There are more than 60 dungeons, and many of them contain resources, upgrades, collectibles, or challenges that aren’t immediately obvious.

While exploring, prioritize:

• Finding all 8 playable Shells
• Discovering the game’s 8 Sidearm variants
• Collecting Map Fragments
• Activating Beacons
• Gathering Tar and Glimpses
• Looking for weapon upgrade materials
• Completing optional encounters
• Keeping an eye out for missable objectives

The biggest mistake would be assuming you can simply return everywhere later and clean up without consequences. Some progression states, NPC interactions, and challenge requirements are much easier to handle before the final boss.

And personally, I’d rather spend an extra hour exploring an area than spend three hours later trying to remember which tiny dungeon I skipped.

Finding All 8 Shells

Shells remain one of Mortal Shell 2’s defining mechanics. Each one changes how your character approaches combat, with differences in durability, abilities, and available upgrades.

One achievement requires you to discover all eight.

The important detail is that Harros from the prologue does not count toward the eight required Shells.

You’ll encounter familiar names such as Tiel, while the sequel introduces new options such as Laszlo, whose heavier combat style and heat-based abilities make him feel completely different from the more agile Shells. Smert is another particularly interesting addition thanks to his unusual time-related abilities.

The achievement for discovering all eight is relatively straightforward compared with the later upgrade requirement, but don’t confuse finding every Shell with fully completing them.

Those are two very different jobs.

Total Recall: Maxing One Shell

Total Recall requires you to maximize all Shell Memories for a single Shell.

This is a good achievement to work toward naturally during your first playthrough.

I’d pick the Shell that fits your personal combat style rather than simply choosing whichever one is considered strongest. You’re going to spend a lot of Tar and Glimpses developing this character, so there’s little reason to invest heavily in a Shell you don’t enjoy playing.

For aggressive players, an agile Shell such as Tiel can be extremely satisfying. If you’d rather absorb punishment and hit enemies like a truck, Laszlo may be a better fit.

The key is to avoid spreading your resources too thin too early.

Master of Inhabitance Is the Real Grind

This is where the Platinum hunt becomes significantly more demanding.

Master of Inhabitance requires you to maximize the Shell Memories for all eight Shells.

The problem is Glimpses.

There simply aren’t enough Glimpses available to comfortably max every Shell during one standard playthrough. That’s why your completion journey naturally extends into New Game+ and New Game++.

This isn’t necessarily a bad thing. Mortal Shell 2’s combat is one of those systems that becomes more enjoyable once you stop thinking about every encounter as a survival problem and start understanding enemy timing.

By NG+, you should already know which attacks you can Harden through, which strikes are safe to parry, and when it’s better to simply roll away.

Use later playthroughs to farm Glimpses, clear high-level dungeons, defeat bosses again, and finish the Shell upgrade trees.

Weapon Upgrades and the Complete Arsenal

There are two major equipment-related achievements worth planning around.

Bringing a Knife to a Firefight

You need to upgrade one primary weapon to its maximum level.

Weapon upgrades require materials such as Quenching Acids, along with specialized resources hidden throughout the world.

Don’t spend every rare material the moment you find it. Pick a weapon you genuinely enjoy and concentrate your upgrades there first.

Mortal Shell 2’s combat is fast enough that weapon familiarity matters almost as much as raw damage. I’d rather have one weapon fully upgraded that I know inside out than several mediocre weapons sitting halfway through their upgrade paths.

Guns. Lots of Guns.

Despite the name, you’re not collecting a conventional gun arsenal.

The achievement requires finding all 8 Sidearm weapons.

Sidearms provide another layer to combat and use Resolve rather than a traditional stamina resource. Among the early examples are the Naylshotte and Troubadour’s Lute, but you’ll need to explore considerably deeper into the world to complete the collection.

Check hidden chests, dungeon rewards, and side areas rather than sticking exclusively to the main route.

Story and Boss Achievements

A large portion of the trophy list comes naturally from progressing through Mortal Shell 2, but the game’s major dungeon bosses shouldn’t be underestimated.

The Great Arbiter of Flesh is a good example of why Harden remains so important. His attacks can look overwhelming at first, but once you understand the rhythm, you can absorb specific heavy strikes and immediately punish the recovery.

Don’t panic-roll everything.

That was probably my biggest lesson with Mortal Shell 2. The game gives you a stamina-free dodge system, which makes rolling incredibly tempting. But constantly rolling isn’t always the safest option. Sometimes standing your ground, Hardening at the correct moment, and counterattacking is far more effective.

Forever Alone: The Achievement That Deserves Its Own Run

If there’s one trophy I’d recommend leaving until you’re experienced with the game, it’s Forever Alone.

The requirement is brutal: complete the game without ever binding to a Shell, remaining in your fragile base form.

This essentially turns Mortal Shell 2 into a completely different game.

Without Shell protection, mistakes become catastrophic. A single hit can end the run, meaning that encounters you’ve previously treated casually suddenly become serious tests of timing.

I strongly recommend attempting this on a separate save after you’ve already finished the main game.

By that point you’ll have seen the bosses, learned their attack patterns, and developed a much better understanding of the combat system.

The lack of a stamina bar actually helps here. You can roll repeatedly when necessary, but I’d still focus on precise dodging, Harden timing, enemy spacing, and parries rather than relying on constant movement.

This is not the achievement to experiment with.

Ultimate Karen and Perfect Ripostes

Ultimate Karen asks you to perform a perfect riposte and finisher against a major boss.

The basic idea sounds simple, but the timing can be unforgiving.

Build your Resolve through normal combat, watch for a parryable boss attack, and hit the parry at exactly the right moment. If successful, immediately follow up with the required execution.

The temptation is to force the parry because you want the achievement.

Don’t.

Play normally and wait for attacks you recognize. Mortal Shell 2’s combat rewards patience, and forcing a parry against an unfamiliar animation is usually a great way to get flattened.

Gorf, 9000 Damage, and Other Oddball Achievements

Some of the most memorable achievements aren’t tied directly to the main story.

Meat is Back on the Menu involves the strange frog NPC Gorf and his food-related interactions. You’ll need to locate him in the swampy parts of the world and bring the appropriate items to progress his unique sequence.

Then there’s Over 9000, which requires dealing more than 9,000 damage in a single action or combo.

This one is much easier once your character is properly developed.

I’d leave it for NG+ or later. By then you can combine a highly upgraded weapon, damage-boosting Tarstones, full Resolve, and a vulnerable enemy or boss to create the necessary burst.

And don’t forget Finish the Fight, which requires defeating the optional Tar Golem. This is exactly the sort of encounter that completionists can miss while following the main objectives.

Exploration Achievements

Exploration is where your first playthrough should do most of its work.

Cartographer

You need to collect all Map Fragments.

The important thing here is not assuming that finding one fragment in an area means you’ve completed that area’s map. Locations such as Widow’s Overlook contain multiple fragments, including entries such as Map of Fainweald [3] and [4].

Search side paths before moving on.

Light the Darkness

You must activate every Beacon across the world.

Beacons aren’t just convenient checkpoints. They also act as important landmarks while navigating the interconnected map.

Areas such as Marrow Keep, Desolate Keep, and Blackridge Pass should all be thoroughly checked.

If you’re missing this achievement late in the game, retracing your steps can be surprisingly annoying. Light every Beacon when you discover it.

Night Mode and the Gloombound Flame

Embrace the Night requires you to activate Night Mode using the Gloombound Flame.

After progressing through the Great Arbiter of Flesh section, you’ll obtain the flame and eventually take it to the appropriate location at the top of Marrow Keep.

Speaking with Thestus allows you to transition the world into Night Mode.

Night Mode isn’t just a visual gimmick. Enemies become more dangerous, but the altered world also offers better rewards, special events, and additional content.

I’d personally recommend waiting until you’re comfortable with normal combat before spending serious time here. Once you’ve got your preferred Shell and weapon upgraded, the increased difficulty becomes much more manageable.

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My Recommended Platinum Strategy

If I were starting Mortal Shell 2 again specifically for the Platinum, this is the order I’d use:

1. Play the first run naturally but never activate the Slayer Seal.
2. Find all eight Shells and Sidearms while exploring.
3. Activate every Beacon you encounter.
4. Collect Map Fragments and upgrade materials instead of rushing the story.
5. Max one Shell to unlock Total Recall.
6. Complete the main story and optional bosses.
7. Clean up missable achievements before moving into the next cycle.
8. Enter NG+ and focus on Glimpse farming and weapon upgrades.
9. Continue into NG++ to finish the remaining Shell Memories.
10. Attempt Forever Alone separately once you know the bosses extremely well.

That approach spreads the workload out instead of turning the final hours into one enormous checklist.

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Final Thoughts

Mortal Shell 2 has a surprisingly demanding achievement list, but I don’t think it’s unfair. The game asks you to actually engage with most of what it offers rather than simply collect a few story trophies and call it a day.

The biggest time sink is undoubtedly Master of Inhabitance, because maxing all eight Shell Memory trees requires multiple playthroughs. Forever Alone is the biggest mechanical challenge, while the exploration achievements are the ones most likely to cause unnecessary cleanup if you don’t pay attention during your first run.

The good news is that Mortal Shell 2 is fun enough to make repeated runs worthwhile.

Once you understand the combat, the game feels dramatically different. Harden stops being a panic button and becomes a deliberate part of your attack rhythm. Resolve management becomes second nature. And the absence of a traditional stamina bar gives the sequel a much more aggressive flow than its predecessor.

For me, that’s what makes the Platinum hunt worthwhile. You’re not simply replaying the same game to fill a checklist. You’re getting better at the game itself.

So take your time on the first run, never touch the Slayer Seal, explore every suspicious-looking corner, and don’t worry if the Platinum takes you into NG++. Mortal Shell 2 clearly expects completionists to spend a lot of time in its world.

And honestly, once you’ve mastered the combat, that’s not such a bad place to be.

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