Full list of all 12 Crystal Defenders achievements worth 200 gamerscore. It takes around 4-5 hours to unlock all of the achievements on Xbox 360.
Achievements they've won
Achievements they've not won
Clear all 12 maps.
Accumulate a total score of 100,000 points.
Clear all the maps in W3.
Clear all the maps in W2.
Accumulate a total score of 50,000 points.
Clear a map without deploying a Thief or losing a single crystal.
Clear all the maps in W1.
Clear a map with more than 10,000 points.
Clear a single map without losing any crystals.
Clear all the waves on any single map.
Clear wave 20 on any single map.
Clear wave 10 on any single map.