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.
Defeat Misbegotten Amalgam
Activate all Beacons
Get the Kinship ending
Defeat Shidra
Witness the Final Performance
Unlock the Barrier Door
Have the final interaction with Yon
Fully Upgrade a Weapon
Discover all Prey
Discover all Traits
Defeat Shapely Fidus
Defeat Vulture
Defeat the Jawcrab
Pull down Prey
Reach Level 30
Defeat the Jawstag
Defeat the Desert Watcher
Defeat the Whispering Mothers
Absorb 100 Prey
Defeat Amalgam
Acquire a Hunt Point
Reach 100 Ardor
Discover a Trait
Activate a Surrogate
Defeat the Artisan of Flesh
Reach Max Breath Capacity
Defeat the Harmless Rockgiant
Acquire all Hunt Points
Acquire all Weapons
Unlock all Nervepasses
Defeat the Grieving Rockgiant
Acquire all Outfits
Get all Achievements
Get the Weakness ending
Accept all of the Coda's Gifts
Obtain all Fetal Pearls