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