CheatOgre.com:
Dropship
Level select
Select the "Classified Files" option at the
main menu. Enter KINGSLEY as an unlock code.
Bonus level 2
Select the "Classified Files" option at the
main menu. Enter SHEARER as an unlock code.
Bonus level 1
Select the "Classified Files" option at the
main menu. Enter KREUZLER as an unlock code.
Bonus level 3
Select the "Classified Files" option at the
main menu. Enter UBERDOOPER as an unlock code.
Invincibility
Select the "Classified Files" option at the
main menu. Enter TEAMBUDDIES as an unlock code.
Unlimited ammunition
Select the "Classified Files" option at the
main menu. Enter BLASTRADIUS as an unlock code