Off to a Good Start - Hidden Memory Card Secret
Fans of the first game know how it ended and the surprises they added in. If you happen to have a memory card with your old save file on it there is good news for you. Place the card with the saved file from the original Ratchet and Clank. Now when you start the new game you will be rewarded with more weapons and items to start the game with. Just remember the saved file must have a completed game save on it for this trick to work.
New Ratchet Clothes
If you get 7 skill points a special tux will be unlocked and can be worn.
Clank has a Swelled Head
The catchy name is really just that but this is a fun thing to unlock if you get 5 skill points you will unlock the big head mode to use on Clank. Now there are more things you unlock with skill points instead of just making each one a separate line and since it really is not a code or cheat here are the main ones you unlock and the skill points needed:
10 skill points unlocks the mirrored levels, at 12 skill points all actors have big heads, 15 skill points unlocks the clown suit for Ratchet. At 20 skill points all enemies will have big heads, 20 skill points unlocks the Clowner paint job. A few of the things you unlock must be used at Slim's 25 skill points unlocks the Dark Nebula paint job, The rest are pretty easy to earn and are in increments of 5-10 skill points a ton of paint jobs at Slim's.
Other Codes for Ratchet and Clank Going Commando - Random Stuff & More
- Random Stuff Menu
Successfully complete the game to unlock the Random Stuff menu. - Endorsement Deals
Collect all weapons to unlock this option at the Random Stuff menu. - Sheep Invaders
Collect all weapons to unlock this option at the Random Stuff menu. - Making of Movie
Collect all weapons to unlock this option at the Random Stuff menu. Note: This is only available in the NTSC version of the game. - Paintings
Collect all weapons and all mods to unlock this option at the Random Stuff menu. - Rejected Commercials
Collect all weapons and all mods to unlock this option at the Random Stuff menu. - Clank's Day at Insomniac
Collect all weapons, mods, and skill points to unlock this option at the Random Stuff menu. - Insomniac Museum level
Collect all weapons, mods, and skill points to unlock this option at the Shortcuts menu. - First-Person Mode
Defeat the final Boss to unlock this option at the Random Stuff menu. - Space-ish Wars
Successfully complete the game to unlock this option at the Random Stuff menu. - Credits
Successfully complete the game to unlock this option at the Random Stuff menu. - Challenge mode
Successfully complete the game to unlock the Challenge mode option. - Snow skin
Play the Impossible Challenge in the Megacorp Games Arena and win all 60 levels.

