Collect every small red spiders and take the pictures on each stage and beat the game. This will unlock all cheats in the 'secrets' menu.
Ending Bonus
Successfully complete the game to unlock the level select option at the main menu. Press Start during game play to choose a new level.
Movie clips
Take pictures on every level to unlock all movie clips.
Play as Black Symbiote
Complete the game and collect all the Golden Spiders.Go to secrets, then unlock armor upgrade. Start or load any file and you will be the Black Symbiote.
Cheat mode...