"Go To the Special menu then go to the cheats option an enter IMIARMAS. When you hear the goblin that means you did it right " - jirving

"Go to the specials menu and put in for cheats....

ARACHIND unlocks everything

ROMITAS level skip

HEADEXPLODY Bonus training levels

ORGANICWEBBING Unlimited webbing

KOALA All fighting moves

GIRLNEXTDOOR Play as Mary Jane

HERMANSCHULTZ Play as Shocker

SERUM Scientist

REALHERO Police officer

CAPTAINSTACY Play as Captain stacy

KNUCKLES Play as thug 1

STICKYRICE Play as thug 2

THUGSRUS Play as thug 3

DODGETHIS Matrix-style attacks

FREAKOUT Goblin-style costume (sorry no glider)

SPIDERBYTE Small Spider-man

GOESTOYOURHEAD Big head and feet

JOELSPEANUTS Enemies with big heads

UNDERTHEMASK First person view

CHILLOUT Works if you play as the goblin (glider won't heat up
when boosted and shooting)" - Spider-Tom