Red Alert 3 - Commander's Challenge XBox 360 Game cheats,secrets,codes and keys

Red Alert 3 - Commander's Challenge

Achievements:
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Accomplish the indicated achievement to get the corresponding number of
Gamerscore points:

  Star Pupil (5 points): Complete all lessons in the tutorial.
  First Blood (5 points): Complete the first challenge mission, "Dead Meat".
  Victor (20 points): Complete all 13 main path challenge missions.
  Superior Commander (50 points): Complete all 13 main path challenge missions
  under par time.
  Future Leader (20 points): Complete all 50 challenge missions.
  King Of The World (50 points): Complete all 50 challenge missions under par
  time.
  Battle Tested (10 points): Complete any 10 challenge missions.
  Battle Hardened (20 points): Complete any 25 challenge missions.