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