These codes must be entered on the main screen or when the game is paused. You need to hold the R button while entering codes for them to work. The game will let you know if you entered the code correctly.

Blood Off: B, Left, Up, Down, Left, Start, Start.
Unlock Spider-Man: Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start.
All Levels Unlocked/Max Money: B, A, Left, Down, B, Left, Up, B, Up, Left, Left.
Unlock All Levels Only: A, Start, A, Right, Up, Up, Down, Down, Up, Up, Down.
Disco Zoom (In-game Only): Left, A, Start, A, Right, Start, Right, Up, Start.
Spider-Man Wallcrawl: Right, A, Down, B, A, Start, Down, A, Right, Down.
Set Time to Zero (In-game Only): Left, Up, Start, Up, Right.
Happy Blood/Sparks (Main Menu Only): Start, A, Down, B, A, Left, Left, A, Down.
Unlock Cheats: B, A, Down, A, Start, Start, B, A, Right, B, Right, A, Up, Left.

Codes thanks to Planet Gamecube.