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