Enter "A2F9 A424 51A9 6D19" as a password to start with all items except the Remote Robot.

Enter "A2E1 A424 51A1 6D1A" as a password to start with all items at the second level.

Enter "ADE6 AA2A 51A6 6D13" as a password to start with all items, all levels completed, with only the final Boss battle.

Level Password
2 D2D1 D4D4 AE11 D6E1
4 E721 DC70 BC90 D64F