Skip Level- Put in H2F2 as the password and press Start during play to go to end of level.
Level Warp- Put in BCCD as the password.
Unlimited Lives- Put in B32R as the password.
Play Level 4 on Easy- Put in 21LN as the password.
Extra Level- Put in BIER as the password.
Level Passwords:
2- 3KNT
3- MDWH
4- 2S3W
5- 1Z5C