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