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