Here is the full list of all 43 Warhammer: Chaosbane achievements.
Kill all bosses in Boss Rush on at least "Chaos 2" difficulty
Kill a boss in Boss Rush on at least "Chaos 2" difficulty
Finish the game as Elontir
Finish the game as Bragi
Finish the game as all characters
Finish the game as Elessa
Bless a heroic item 50 times
Kill a boss on "Very hard" difficulty
Complete your first Relic Hunt
Complete your first set of equipment
Complete a side activity
Buy all rewards available on the God Skill Tree
Finish the game as Konrad
Reach level 50 with any character
Collect 1,000 pieces of gear
Trade 50 Fragments with the Collectors' Guild
Kill an elite with a build made from at least 90 Skill Points
Find your first heroic item (not a quest reward)
Finish Act III
Find 100 rare or heroic pieces of gear
Kill 1,000 Ungors
Bless your first item
Finish Act II
Kill 100 champions
Acquire 100,000 gold pieces
Reach level 25 with any character
Open 50 chests
Use a God Skill
Be fully equipped with rare or heroic items
Kill 1,000 cultists
Finish Act I
Kill a Jabberslythe
Unlock your first reward from the God Skill Tree
Kill a Mutalith
Kill 1,000 daemons
Donate 100 items to the Collectors' Guild
Collect 100 Fragments
Use bloodlust
Be fully equipped
Finish the Prologue
Complete 50 Relic Hunts
Kill a boss on "Chaos 5" difficulty
Complete 50 side activities