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