To get to this special room, head to Metropolis, enter the first building and go left. Jump to the next one and look to the left to find a portal. The portal is only there between 3am and 4am, so mess with your system clock or just make some coffee.
Dual Ninja Sword:
Pause gameplay then enter Circle, Square, Circle, Square, Up, Down, Left, Left.
Have a savegame from the first Ratchet and Clank on your memory card. Select "Gadgetron Employee Discount" to recieve a 10% discount on your weapons.
Get Squat Stats:
Highlight STATS on the Main Online Menu and press Up, Down, Left, Right, Square.
4-Player Bombs Away:
Press Square in the Qwark comic select and enter "Ying_Tzu".
Pirate vs Ninja, 2 Players:
Press Square in the Qwark comic select and enter "_MEGHAN_".
Go to Edit Profile, hold L2, and enter the following.
|Left, Left, Left, Left, Up, Right, Up, Left||Dan|
|Up, Up, Up, Left, Right, Up, Left, Up||Nafarious|
Sly 2 demo:
At the title screen, hold R1, L1, R2, and L2 at the same time.
Classic Ratchet skin:
If you have a save from the first Ratchet and Clank on your memory card, you can get this from the Phoenix ship weapons vendor.
During any Qwark comic, press Up, Up, Down, Down, Left, Right, Circle, Circle, Square on the D-pad to change Qwark into a pink tutu. Repeat the code to turn him black.
Skill points cheats:
Get the right amount of skill points to unlock the following.
|Big Head Ratchet and Clank||5|
|Secret Agent Clank||15|
|Big Head NPC's||20|
|Ships to Ducks||25|
Enter challenge mode and visit a vendor after beating the game.
Free Health and Ammo:
Enter a challenge and quit it immediately.
Beat the game and look in the Cinematics menu.
Special thanks to Revolution readers Lloyd, hunny, Jacob, Bill Little, Marley Lucas, Antoine, Dingo Joe, and Jason Ruffner!