Super Contra – XBox 360

Super Contra - Platform: XBox 360

Cheat mode:
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Highlight "Arcade Game" and press A. The next screen will have two 
options "Begin Game" or "Exit". At this screen, press Up(2), 
Down(2), Left, Right, Left, Right, B, A, B, A. The game will begin 
when you press the last A. Your lives will display as "4", but you 
will have 30, and your gun will always be the missiles in rapid fire 
mode. 
Note: You cannot earn achievements or rank in the leaderboards when 
this code is enabled.