Full list of all 15 Puzzle Quest: Challenge of the Warlords achievements worth 250 gamerscore.
The base game contains 12 achievements worth 200 Gamerscore, and there is 1 DLC pack containing 3 achievements worth 50 Gamerscore.
Defeat 5 opponents
Capture a Mount
Win an Xbox LIVE match
Research a Spell
Defeat Dugog
Defeat Mechataur
Rebuild Sartek
Complete your citadel
Gain 5 companions
Forge a Godlike item
Reach Level 50
Defeat Lord Bane
Defeat Lord Antharg
Defeat Araveine
Gain the Stormfriend award