Press the D-pad to move Beavis and 1 or 2 to move Butthead at the game over screen.
Game over ending screen
At the Game Over screen, press the directional pad to move Beavis, and press either 1 or 2 to move Butthead.
Enter the following password to go to GWAR: HYA CKC MUZ.
Highland High Password
Enter the following password: XLM DUO ATY.
Highland Hospital password
Enter the following password: WRG DVI GTY.
Hint: Security guard in final level
You can get past the security guard in the final level under the easy difficulty setting without getting the tickets, but it is extremely difficult. First, get a good running start. When you get close to the guard, jump very far. However, before the guard gets a chance to hit you, switch characters. Now, since the first character you were controlling is unable to be hit, do not worry about him. Just jump to the right when controlling the other character. Before the guard gets a chance to hit you, switch characters again. Keep doing this until you are almost past the guard. However, make sure to duck when he is swinging his club at you. Gradually stand up, walk a little, then crouch again. Continue doing this until you are past the guard. Remember, the guard will defeat you in only one hit if you do not have the tickets, and you will get another try no matter how many lives you have.