No you don't but it is based on a co-operation theme so it is more fun to play with friends
you can download ratchet and clank from psn. you wil need a ps3.you can download ratchet and clank on your ps3 through your psn account
To upgrade your weapons!!!!
no you dont really have to but you can get a special skin (captain ratchet)
you need to get all of the trophies
a ps2, psp and mega skills
to beat otto in ratchet and clank size matters, you need four weapons, the optical maser array the 4th evolution of the laser weapon on quadon to shut off his shield, and the PDA, and the eloctro shock rocket (with the lock on and shock mod) and the shield barier. and keep reapeting oh, and you need alot of money for the PDA
You need 20 skill points. there isn't a special code
you need a "Going Commando" save file
you need 30 gold bolts
You need an internet access account and you need to go onto multiplayer and then quick play.
Yes there is a insomiac museum in ratchet and clank a crack in time you just need to get all 40 zoni and defeat lord vorselon for the third and last time when you beat him and get out of his warship then you should get to insomniac museum
You need to be specific. If you mean the Chameleon armor, you need to beat Otto in challenge mode AGAIN.