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