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