Use these passwords to unlock the indicated secret options:
ANYANDALLCODE: unlock doors
CHARLIEALPHANOVEMBERECHO: unlock time factor
NOPAINNOCANE: toggle god mode
DEADREDPARTYSHOES: feet normal or big
BUTTCHEATCANSURPRISE: head normal or big
FRIENDLIESTGODINGALAXY: weapon level up
FISHINABARREL: get unlimited ammo
CHARLIEHUSTLEOVERDRESSEDROMEO: get all weapons
COOLLEVELCHEATCODE: open all levels
CHARLIEOSCARLIMADELTA: have enemies thawed or frozen
CANEREADYTOROCK: healing
YESTERDAYYOURZEBRADIE: clear map