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