Here are some cheats and tips for the game Universal Soldier.
Invincibility:
Enter PWRZS as a password.
Reveal hidden items:
Enter SHBXZ as a password.
Level Password
1-2 CHSGM
1-3 MKSNS
2-1 SGGBY
2-2 JLGPH
2-3 JDRSD
3-1 PKSND
3-2 CWBPM
3-3 SFTNP
4-1 CMVDG
4-2 BYTCM