Code on a Mission
On I think the second mission of the first story (not sure 'cause I'm just playing all of the missions again) watch the cutscene.You'll see "Dr.Jones" teaching. If you look at the chalk board it'll say "0PITA5" (starts with zero not "O") which is a code.
More tricks, tips and cheats for this game are right here - Lego Indiana Jones: The Original Adventures cheats
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