Go to the cheat menu and enter "deadly" to unlock New Goblin.
Go to the cheat menu and enter "venomsky" to unlock everything you could possibly want.
Collect all 50 of the Black Spider Tokens to receive the black Spider-Man suit to wear whenever you'd like for just as long as you'd like.
Complete the game to unlock Arena mode under the extras menu.
Use the ability a lot an earn upgrades