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