Ratchet & Clank: Up Your Arsenal cheats and cheat codes for Playstation 2

Unlock Pirates & Ninjas mini-game
When you play the Qwark Vid Game, instead of selecting a game, press Square 
and type " MEGHAN " as a password. Note: There is a space before and after
the word MEGHAN. Press Start to play.

Bomberman mini-game
When you play the Qwark Vid Game, instead of selecting a game, press Square 
and type "YING TZU" as a password. Note: There is aspace between the two words.
Press Start to play. 

Unlock Challenge mode and "Sketchbook" option at the "Cinematics" menu:
Finish the game once

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

Lava Gun, Bouncer, Holoshield available for buy:
Have a saved game from Ratchet And Clank: Going Commando on your memory card.

Double Bladed Laser Sword:
Pause the game play after press 
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

New Quark costume:
Press Up, Up, Down, Down, Left, Right, O, O, Square in any Quark Vid-Comic 
or
press Up, Up, Down, Down, Left, Right, O, Square, Square in any Quark Vid-Comic

Old School 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:
Reach the indicated amounts of skill points to unlock cheats:

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 

Mega Weapons:
Beat the game to unlock weapons you can buy that are an enhanced version of 
the weapons you already own. You can only buy if you have leveled them up all 
the way already. These cost a lot of bolts but are even more powerful then the 
level 5 weapons you already have and they can be upgraded another three times 
making them very powerful.

Skins:
Obtain the indicated number of titanium bolts or by doin various 
tasks. Note: Only works in single player mode. 

Unlockable Skins - Titanium bolts:
Brainius ( B2 Brawlers cousin) - 6 Bolts 
Bugnoid ( insect alien ) - 6 Bolts 
Constructobot - 6 Bolts 
Old School Ratchet (original uniform) - Ratchet and clank 1 save file. 
Robo ( Robo Break Dancer!) - 5 Bolts 
Robo Rooster ( Bug eyed Robot) - 6 Bolts 
Snowman Skin - 6 bolts 
Trooper ( Robotic enemy) - 5 Bolts 
Tuxido Ratchet - 6 Bolts 

Free Ammo and Health:
Go to any challenge like Annihilation Nation, start the challenge and 
immediately quit