Double Moon Physics
Hold L, then press C-Down, C-Left, C-Right, C-Left, Up, C-Down, Down, Right, C-Down, C-Down at the pause menu.
(Thanks to narkotic_weasel@hotmail.com)

Enable Perfect Balance
Hold L and press C-Down, Right, Down, C-Left, C-Down, C-Up, C-Right, C-Left at the pause menu.
(Thanks to narkotic_weasel@hotmail.com)

Flight Mode
Hold L and press Right, Up, C-Down, C-Up, C-Down, C-Left, C-Left, C-Right at the pause menu. Press and hold ollie to go up into the air and use the stick or D-Pad to manoeuvre.
(Thanks to narkotic_weasel@hotmail.com)

Infinite Money
Hold L, then press C-Left, C-Left, Up, C-Right, C-Up, Down at the pause menu.
(Thanks to narkotic_weasel@hotmail.com)

Kids Mode
Get three gold medals and all goals in Career Mode as Steve Caballero.
(Thanks to narkotic_weasel@hotmail.com)

Multiply Score by 10
Hold L and press C-Down, C-Down, C-Down, C-Down, C-Left, C-Right, Right at the pause menu.
(Thanks to narkotic_weasel@hotmail.com)

Set Stats to 10
Hold L and press Down, Up, C-Up, C-Left, Down, Up, C-Up at the pause menu.
(Thanks to narkotic_weasel@hotmail.com)

Set Stats to 13
Hold L and press C-Up, C-Left, Left, Up, Down at the pause menu.
(Thanks to narkotic_weasel@hotmail.com)

Slow-Nic Mode
Hold L and press C-Up, Down, Left, C-Left, C-Down, C-Up, C-Right at the pause menu.
(Thanks to narkotic_weasel@hotmail.com)

Thin Skater
Hold L and press Left, C-Right, Right, Down, C-Down, Up, Up at the pause menu.
(Thanks to narkotic_weasel@hotmail.com)

Turbo Mode
Hold L and press C-Left, C-Down, C-Up, Down, Up, Right at the pause menu.
Or, get three gold medals and all goals on all levels with Spider-Man in Career Mode.
(Thanks to narkotic_weasel@hotmail.com)

Unlimited Specials
Hold L and press C-Left, C-Down, C-Up, Right, C-Right, Right at the pause menu.
(Thanks to narkotic_weasel@hotmail.com)

Unlock McSqueeb
Get three gold medals and all goals in Career Mode as Tony Hawk.
(Thanks to narkotic_weasel@hotmail.com)

Unlock Officer Dick
Discover 275 of the gaps in the game.
(Thanks to narkotic_weasel@hotmail.com)

Unlock Spider-man
Get three gold medals and all goals in Career Mode as a created skater.
(Thanks to narkotic_weasel@hotmail.com)

Unlock Trixie
Discover all of the gaps in the game.
(Thanks to narkotic_weasel@hotmail.com)