Ratchet & Clank: Up Your Arsenal PlayStation 2 Cheats

Secret Character Skin Codes
Go to Edit Profile, press and hold L2, then enter the code below to unlock secret skins:
Effect - Code
Nefarious Skin - UP, UP, UP, LEFT, RIGHT, UP, LEFT, UP
Dan Skin - LEFT, LEFT, LEFT, LEFT, UP, RIGHT, UP, LEFT

Bonus weapons
Have a saved game from Ratchet And Clank: Going Commando on your memory card to have the Lava Gun, Bouncer, Holoshield, and other weapons available to be purchased.

Double Bladed Laser Sword
Pause the game and enter the following: Circle, Square, Circle, Square, Up, Down, Left, Left

Unlock Sly 2: Band of Thieves Demo
Hold Down L1+L2+R1+R2 Simultaneously at title screen.

Unlock Squat Stats
At the main menu highlight "Stats" and press Up, Down, Left, Right, Square

Old School Ratchet Skin
If you have a Ratchet and Clank 1 file on your memory card you can activate this at the Pheonix starship weapon vendor.

Cheats
Get a certain number of skill points to unlock each of the cheats:
Effect - Code
Big Head A.I. - 20 Skill Points
Big Head Ratchet & Clank - 5 Skill Points
Mirror Worlds - 30 Skill Points
Secret Agent Clank - 15 Skill Points
Ships to Ducks - 25 Skill Points
Time Freeze - 10 Skill Points
Wrench Replacement - Enter code from Demo

Unknown
Note: This game is revealed on the demo disc's Captain Quark mini-comic game after all the tokens are collected. Press Circle, Square, Circle, Square, Up, Down, Left(2).

Insomniac Museum
The very cool and special Insomniac Museum is a hidden planet in the game where those skilled and lucky enoughcan go to check out some very cool extras, cutting room floor materials, minigames, effects, animations, weapons, etc., via a detailed and 3D rendered replica of the Insomniac Games' offices. There are two ways to get into the Insomniac Museum:
    1. The first is to collect all of the games 15 trophies. Once all have been collected the locked door inside the Trophy room at Phoenix will be open. Just walk in and you will be whisked away into the museum.
    2. The second way to get into the museum is via a special teleporter on Metropolis. The pad can be found through the window on the left, before the swing target leading to the level's first Titanium bolt. The teleporter is typically not operational but, if you return to it when all good "Insomniacs" are awake-between 3:00-3:59 AM.

Dark Quark
In the Insomniac Museum, play the unused Quark vid-comic level and enter: Up, Up, Down, Down, Left, Right, Circle, Square, Square.

Qwark in a tu tu
During any qwark vidcomic, enter the following: Up, Up, Down, Down, Left, Right, Circle, Square, Square.

Annihilation Nation Trophy
Win every challenge in the Annilation Mation.

Friends of the Rangers Trophy
Do all of the Ranger Battle missions.

Nano Finder Trophy
Get full Nanotech of 200 (can only get 200 Nanotech in Challenge Mode)

Omega Arsenal Trophy
Upgrade every weapon in the game to its Omega version.

Skill Master Trophy
Get all 30 Skill Points.

Titanium Collector Trophy
Find every Titanium Bolt in the game.

Mega Weapons
Beat game once and enter challenge mode. Now visit a vendor to purchase Mega Weapons.

RY3NO
Beat game then it should be in the first vendor on Planet Florana.

Sketchbook
Beat Game once then should be in Cinematics menu. Press L1 or R1 to cycle through.

Wear Inferno Mode Armor Forever
When you get an inferno mode canister broken. Pause the game, go to skins, and equip current armor. You will have the armor on even after the Inferno effect wears off.

Free Ammo and Health
Go to any challenge like Annihilation Nation, start the challenge and quit and it refills your ammo and health.

Get a discount on weapons
If you have a save from Ratchet and Clank 1, you get a 10% discount on weapons when you buy them. Save must be past the 2nd hoverboard race.

The Bomberman Mini-Game
First, go to star pheonix's vid comic room. Press triangle to select chapter then press square. Now put in YING_TZU. Finaly, press start and you get transported to insomniac museum to play a Bomberman-like minigame. It can go up to 4 players.

Fast Weapon XP
Need easy stages to get weapon experience? Play the Annihilation Nation challene against Scorpio to rack up the XP. Some weapons, like the shield glove, may need different stages to gain XP. For the shield glove, try playing the battle missions in Marcadia and having the bevy of peons shoot your shield for XP.