Dr. Mario 64 Cheats

Level 1 vs Wario
level 2 vs Spearhead
level 3 vs Webber
level 4 vs Jellybob
level 5 vs Helio
level 6 vs Hammerbot(easy difficulty)
level 6 vs Hammerbot Wario and Mad Sciencestein(Normal or harder difficulty)
level 7 vs Mad Sciencestein(easy difficulty)
level 7 vs Rudy(Normal of harder difficulty)
level 8 vs Rudy(easy difficulty)
level 8 vs Vampire Wario(don't lose one match and do that on Normal or harder difficulty)

yadda yadda WD777

Level 1 vs Dr.Mario
level 2 vs Spearhead
level 3 vs Webber
level 4 vs Octo
level 5 vs Lump
level 6 vs Hammerbot(easy difficulty)
level 6 vs Hammerbot, Dr.Mario, and Mad Sciencestein(normal or higher difficulty)
level 7 vs Mad Sciencestein(easy difficulty)
level 7 vs Rudy(normal or higher difficulty)
level 8 vs Rudy(easy difficulty)
level 8 vs Metal Dr.Mario(normal or higher difficulty and must not lose a single round)

walkthrough by WaddleDee777 aka WD777

To unlock Vampire Wario as a playable character in Versus mode, complete Story mode on Normal or higher difficulty using Dr. Mario, but without losing a single time.

When selecting a computer opponent in Vs. Computer mode, hold the L button and press A to make his difficulty one star harder (the equivalent of Hard level).

By holding L and pressing B, the computer player's difficulty increases two stars (the equivalent of S-Hard level).

To get more Viruses, Press L or R in marathon mode to increase the number of viruses.

To open up S-Hard difficulty in Story mode, highlight Hard and press the Z button. Pressing the Z button again switches it back to Hard.