Marvel Puzzle Quest: Dark Reign has 12 achievements worth 1,000 gamerscore.
All achievements
Achievements they've won
Achievements they've not won
Unlock Loki
Beat chapter 5
Max out any character
Beat chapter 4
Beat chapter 3
Beat chapter 2
Beat chapter 1
Collect 15 covers for any character
Beat prologue
9 chain combo
Defeat Juggernaut
make an eight of a kind