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