Full list of all 37 Mortal Shell: Enhanced Edition achievements worth 1,300 gamerscore.
The base game contains 25 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 12 achievements worth 300 Gamerscore.
Beat the game without ever bonding with a shell.
Defeat Hadern in the tutorial
Unlock all secret lore
Pick 50 mushrooms
Kill an enemy with a bear trap.
Beat the game in obsidian dark form.
Waste your life away with Baghead.
Become familiar with all items.
Find your first Shell.
Kill an enemy by kicking them off a platform.
Bring a gland to Dark Father.
Jam with a brigand.
Spend over 50,000 Tar in the Vlas's Shop
Parry over 100 attacks.
Unlock all of the Shells in the game.
Defeat all the different versions of Grisha.
Complete Mortal Shell.
Defeat Imrod, the Unrepentant.
Defeat Tarsus, the First Martyr.
Defeat Crucix, the Twiceborn.
Defeat The Unchained.
Kill two or more enemies with one shot from the balistazooka.
Kill an enemy with a hardened plunge.
Renounce humankind.
Pet Vlas's cat.
Spend 100,000 tar in The Virtuous Cycle
Return your first seed to Twin Sister
Return all seeds to Twin Sister and break the Virtuous Cycle
Unlock all Shell Shades for The Virtuous Cycle
Max familiarity with all of the game's lutes
Acquire 100 instincts in one cycle
Return a seed with Hadern in The Virtuous Cycle
Acquire all 4 weapon Instincts for the Axatana in one cycle
Complete a run in The Virtuous Cycle with the Dark Form Obsidian Shell Shade
Beat all variations of the Dark Shells in The Virtuous Cycle
Fully Upgrade Hadern's skill tree
Transform the Axatana between different modes