At the title screen, press Left, Right, X, B, A, Y, RB, RT, Down, Up, LB, and LT in that order. If done correctly, you'll get a confirmation that everything in the game has been unlocked, though save data, achievements, and posting to leaderboards will be disabled until you restart the game from the Xbox Dashboard.
Code Effect Left, Right, X, B, A, Y, RB, RT, Down, Up, LB, LT Unlock Everything
Contributed By: ValocDarkmyre.
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