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