Bill and Ted's Excellent Video Game Adventure - Cheats & Codes
Level 2 - Enter 555-6929 as a password.
Level 3 - Enter 555-9807 as a password.
Level 4 - Enter 555-2760 as a password.
Level 5 - Enter 555-4731 as a password.
Level 6 - Enter 555-5864 as a password.