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