Here is the full list of all 32 Kingdom Under Fire: Circle of Doom achievements worth 1,000 gamerscore.
Defeat the Ice Maiden.
Pick up all items dropped by a boss.
Reach Level 40 with any character.
Finish the game with Leinhart.
Defeat Encablossa.
Defeat the Balrog.
Successfully execute a 20 combo attack with a Bloodlust enhanced weapon!
Succeed in Item Synthesis.
Defeat Loki.
Learn an Ability.
Reach Level 10 with any character.
Defeat the Forest Guardian.
Complete the tutorial.
Finish the game with Kendal.
Finish the game with Regnier.
Finish the game with Celine.
Raise Marguerite's favor to 100%
Finish the game with Curian.
Complete all of Kendal's story quests.
Complete all of Regnier's story quests.
Complete all of Celine's story quests.
Complete all of Leinhart's story quests.
Watch all of the starting staff roll AND the ending staff roll credits!
Have a heartwarming talk with Bertrand.
Raise Marguerite's favor to 50%!
Defeat Mutant Curian.
Hunt down Loki's head.
Synthesize the same piece of equipment 10 times.
Synthesize the same piece of equipment 20 times.
Reach Level 120 with any character.
Reach Level 80 with ALL characters.
Hunt down a Stone Golem.