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