Here is the full list of all 41 Krater achievements.
Defeat Bloodclot
Join a coop mission
Kill Roger and his pet
Kill ElectroBert
Kill Cortex
Reach level 45 in the dungeon Limbo
Defeat Bloodclot in hardcore mode
Recruit Yimmie
Complete the “The Wretched Hive” quest
Complete “Stark raving mad” quest
Visit Solside City
Discover 40 locations
Visit Frisktorp
Equip one Slow booster in a Medikus' Healing orb ability.
Amass a fortune of 100000 kr
Equip three Damage boosters in a Medikus' Healing Orb ability.
Equip three Damage boosters in a Regulator's Area slow ability.
Equip one Slow booster in a Regulator's Tag ability.
Equip one Strength booster in a Slayer's Lacerate ability.
Equip three Healing boosters in a Slayer's Perforate ability.
Equip three Damage boosters in a Bruiser's Stomp ability.
Equip one Stamina booster in a Regulator's Area slow ability.
Equip three Defense booster in a Medikus' Heal ability.
Equip three Healing boosters in a Bruiser's Stomp ability.
Equip one Slow booster in a Bruiser's Cleave ability.
Equip three Healing boosters in a Regulator's Area slow ability
Recruit a mutant Regulator
Recruit a mutant Medikus
Recruit a Character
Recruit a mutant Bruiser
Kill 8 enemies in 10 seconds
Reach rank 15
Equip one Strength booster in a Medikus' Nano Stream ability.
Discover 30 locations
Discover 20 locations
Visit Westerfall
Discover 10 locations
Craft an item
Kill 10 Vildhunds
Use Team Management
Complete the Tutorial