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