Level select -
Enter "*S3L3CT0N*" as a password. Then, enter "*SH0WT1M3*" as a password.

Infinite lives and best weapons -
Enter "*1NV1S4BL3*" as a password to get unlimited lives and the top of the line weapons.

Gallery mode -
Enter "*G4LL3RY*" as a password.

Boss fights -
To start at an end level Boss, enter the "Game Options" screen and highlight the "Start Level" selection. Select a level, then highlight the "Start At Boss" selection. Choose "Yes", then "Ok" to go to the Boss fight for that level.

Level passwords -
Note: There are more than one password for each level. Each password has different weapons and lives.

Level - Password - Alternate 1 - Alternate 2
2 - N1PBBDG8V - QQPBBYGYV - Q8QBBYQ6V
3 - XG#BVMVFW - GP4BVD6RW - 439BBP6LW
4 - 85DCVLQVC - 4GKCVDLZC
5 - GNWCVBGMD - 6PXCBCVBN
6 - SP2CBBV8J - N93CVBG8J