One Codes -

Level select:
Enter HEVYFEET as a password.

All weapons:
Enter MAXPOWER as a password.

Debug mode:
Enter HEYBUDDY as a password. Options to select a stage, section, invincibility, all weapons, and removing the pause text will appear.

Full pause screen:
Enter THEPRESS as a password. The text normally displayed when the game is paused will be disabled.

Level	Password
1	(None)
2	DIYGIXRA
3	KCSVJTJB
4	RWLKLPBC
5	YQFZMLTC
6	FLZNOHLD