Console Monster writes: "We have just added the Achievements for Command and Conquer: Commander's Challenge on the Xbox 360.
The game's highest rewards are worth 50 GamerScore each, and can be obtained by completing all 50 challenge missions under par time and completing all 13 main path challenge missions under par time.
Quite surprisingly and unexpectedly for an Xbox Live Arcade title, the game contains four secret achievements worth 5 GamerScore each. It is likely that these are story-related achievements.
The game is expected to release later this year.
The list contains 12 achievements worth 200 GamerScore; 4 of which are secret achievements..."