In Game Cheats
During a mission pause the game and enter the following codes.
Note: Mission Complete only works on normal missions and not on ''Collect the Red Coins'' or 'Find all Enemines'' Missions.
Code Effect Hold R button, Y, Y, Y, Y, Release R button, Hold L button, Y, Y, Hold R button + L button, Y, X, Y Characters will have big heads Hold R and press B,B,B,X ,release R hold L and press Y,Y, release L then hold R and press B.B Complete Current Mission Hold L+R and press X,B,X,Y,Y,B,X,B Sword Upgrade
Unlock Battle Arena
Do the following and the Battle Arena will be opened in Robot Beach.
Unlockable How to Unlock Battle Arena Get all normal grades, then get the master grade.
Contributed By: kenb215.
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You can submit a problem report for any non-working or fake code in the lists above.