Secret Levels
Three secret levels exist in "Lego Indiana Jones: The Original Adventures." Unlock the Ancient City by collecting all the artifacts in the Temple of Doom episode, unlock the Warehouse by collecting all the artifacts in the Last Crusade episode and unlock the Young Indiana Jones level by collecting all the artifacts in the Raiders of the Lost Ark episode.
Unlock Hans Solo
A Lego version of Han Solo from the "Star Wars" franchise can be unlocked and used for play in "Lego Indiana Jones: The Original Adventures" by collecting all five of the hidden Star Wars figures. Leia can be found in the Temple of Doom Episode, R2-D2 can be found in the Last Crusade episode and C-3PO, Chewbacca and Luke can all be found in the Raiders of the Lost Ark episode. Once all five figures have been found, Han Solo will be unlocked and accessible from the character selection screen.
Character Passwords
Characters can be unlocked by entering the correct password from inside the math classroom of the university. Enter the code "8246RB" to unlock Boxer, "B73EUA" to unlock British Commander, "3NK48T" to unlock Chucin, "2K9RKS" to unlock Colonel Dietrich, "8EAL4H" to unlock Colonel Vogel, "C7EJ21" to unlock Dancing Girl, "2MK45O" to unlock Desert Enemy Officer, "N48SF0" to unlock Desert Masked Bandit, "1MF94R" to unlock Enemy Communications Officer, "B84ELP" to unlock Enemy Pilot, "V75YSP" to unlock Fedora, "NFK5N2" to unlock Maharaja, "2NKT72" to unlock Pankot Assassin, "VJ37WJ" to unlock Sherpa Brawler, "ND762W" to unlock Sherpa Gunner, "0E3ENW" to unlock Slave Child or enter "T2R3F9" to unlock Thuggee Priest. Finally, enter "VJ85OS" to unlock Officer Indiana Jones or "4J8S4M" to unlock Disguised Indiana Jones.
Miscellaneous Passwords
Other features can be unlocked in "Lego Indiana Jones: The Original Adventures" by accessing the password screen in the math classroom of the university and entering one of the following passwords. Enter "VIKED7" for the artifact detector, "4ID1N6" to unlock various disguises, "VKRNS9" to disarm your enemies, "B83EA1" for invincibility or "MDLP69" to regenerate some of your health.