Ratchet & Clank: Up Your Arsenal Cheats for the PS2

Insomniac Room:
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 , , , , Up, Down, Left, Left.

10% Discount:
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, .

4-Player Bombs Away:
Press in the Qwark comic select and enter "Ying_Tzu".

Pirate vs Ninja, 2 Players:
Press in the Qwark comic select and enter "_MEGHAN_".

Unlockable skins:
Go to Edit Profile, hold L2, and enter the following.

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.

Qwark's Tutu:
During any Qwark comic, press Up, Up, Down, Down, Left, Right, , , 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.

Mega-weapons:
Enter challenge mode and visit a vendor after beating the game.

Free Health and Ammo:
Enter a challenge and quit it immediately.

Sketchbook:
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!