Here is the full list of all 12 Voltron: Defender of the Universe achievements worth 200 gamerscore.
Complete a level in an Xbox LIVE game with four other players.
Complete a level in an Xbox LIVE game where you are the only surviving player.
Beat a friend's level score after they have beaten yours in the same Xbox LIVE game session.
Complete the game with all five Lions.
Rescue 100 groups of civilians.
Kill a Robeast without Voltron losing any health.
Complete the game with any Lion.
Get five Survivor bonuses in a single play session.
Earn a x10 score combo five times in a single level.
Achieve ten air pounces in a single level.
Complete any three levels without seeing a game over in a single play session.
Complete any level without the Lion deactivating once.