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