Here is the full list of all 46 BIOMUTANT achievements.
Defeat All four World Eaters
Feed the Murk Puff 10 Guppos
Discover all 16 Side Characters
Capture 20 Guppos
Complete all 20 Conscience Dialogues
Pull all Teeth from the Hoof Puff
Defeat or Subdue all five Rival Tribe Leaders
Discover all 6 Tribe Forts
Discover all 7 Environment Biomes
Discover a Twinkle Crashsite
Buy an Item from Honki
Capture 20 Glittermoths
Defeat 25 Bandits
Discover all 30 Altars
Defeat Enemies using 3 Different Tribe Weapons
Discover all 15 Old World Gadgets
Take over 6 Tribe Outposts
Discover and enter 3 Manholes
Feed the Jumbo Puff World Eater 6 Sqvips
Ride the Googlide across all Water Resistance Levels
Defeat 20 Enemies using the Ki-Spark Ability
Reach Level 25 with any Character Class
Find out what’s at the End of a Rainbow
Drown 5 Enemies in Oil during Combat
Unlock all Gun Proficiency Skills
Survive 5 minutes in the Mekton while in the Deadzone
Find and Equip 5 Different Mekton Upgrades
Re-code your DNA at a Cooling Tower Biopool
Unlock all Melee Weapon Proficiency Skills
Craft a 7 Star Weapon
Unlock all Automaton Upgrades
Upgrade any 2 Attributes to 100
Defeat 50 Enemies using Super Wushu
Stick 25 enemies to the Mucus Bubble
Detonate 3 Bangballs on the Porky Puff
Capture 20 Gumducks
Capture 20 Pippis
Find and Equip 5 Different Googlide Upgrades
Obtain 10 of each Crafting Resource
Capture 20 Sqvips
Win a Drinking Competition against Gulp
Possess more than 1000 Greenleaf
Deal more than 1000 Damage in a Single Hit
Ride a Gnaut 500 meters
Bounce 50 times on a Fungus
Escape Bunker 101