Slow motion:
Begin game play as Max, then hold R and press Up(4). 

Kurt in boxer shorts:
Hold L + R and press X(2), Y, X at the main menu. 

Mixed character:
Pause game play, then hold L + R and press Up, Down, Right, Left, A, Y, B, X, X +
Start to play as a character that is part Kurt, Max, and Doctor Hawkins. 

Panning camera:
Pause game play, then hold L + R and press B, A, B, A. 

Crazy camera views:
Pause game play, then hold L + R and press A, B, A, B.

Fart sounds from Doctor Hawkins:
Begin game play as Doctor Hawkins, then press L + R + Left + A. 

Full pause screen:
Pause game play, then press X + Y. 

Hidden artwork and sounds:
Place the game disc in a PC compatible CD-ROM drive to find .JPG images, .WAV
sounds, and .MP3 blooper tracks from the game in the "mdk2" directory. 

Soundtrack:
Start the Dreamcast without a disc to access the audio CD player. Insert the game
disc and play tracks two and above to hear 31 techno music tracks from the game.