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.
Cleared wave 20 on any single map.
Cleared wave 10 on any single map.
Clear all the waves on any single map.
Clear all the maps in W1.
Clear all the maps in W2.
Clear all the maps in W3.
Clear a single map without losing any crystals.
Clear all 12 maps.
Accumulate a total score of 50,000 points.
Clear a map with more than 10,000 points.
Accumulate a total score of 100,000 points.
Clear a map without deploying a Thief or losing a single crystal.