Here is the full list of all 47 GRIME achievements.
The base game contains 35 achievements, and there are 3 DLC packs containing 12 achievements.
Get all Achievements
Unlock all Nervepasses
Get the Kinship ending
Acquire all Weapons
Have the final interaction with Yon
Acquire all Outfits
Accept all of the Coda's Gifts
Defeat Misbegotten Amalgam
Reach Max Breath Capacity
Defeat the Artisan of Flesh
Defeat the Grieving Rockgiant
Acquire all Hunt Points
Defeat the Desert Watcher
Activate all Beacons
Get the Weakness ending
Defeat Shidra
Discover all Prey
Witness the Final Performance
Unlock the Barrier Door
Fully Upgrade a Weapon
Defeat Shapely Fidus
Discover all Traits
Defeat Vulture
Reach Level 30
Defeat the Jawcrab
Defeat the Jawstag
Pull down Prey
Defeat the Harmless Rockgiant
Defeat the Whispering Mothers
Absorb 100 Prey
Defeat Amalgam
Acquire a Hunt Point
Reach 100 Ardor
Discover a Trait
Activate a Surrogate
Obtain all Fetal Pearls