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