Ratchet and Clank: Up Your Arsenal Cheats

Go to Tyronosis and get to the plain. Hop in the car and crash into all
the flower thingies and for every group you destroy, you get about 300
bolts. Then, let the monkey dude kill all the teranoids(works best after
bioblitziater attack). You get about 50 every teranoid. Then head to the
base and kill all the robo-noids and noids and break all boxes to get
about 5000 bolts or more. Also, on the right side of the base is a
titanium bolt to buy skins with.

Every weapon in the game changes its name when you upgrade it to level 5:

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.

First you buy the holoshield glove from a gadgetron vendor for 30,000 bolts, then go to daxx. Take the path that leads to the charge boots (the one behind your ship that has all the bugs) kill all the bugs and a big robot with gattlings should appear, then put on your holoshield glove then, just let him keep shooting at the shield until it turns red, then repeat the process until your holoshield glove reaches lvl 5 and is an ultrashield launcher.

In the last boss fight keep attacking him until he gives up and tricks you. go to the bridge with many robots on it use sniper rifle on the last boss nefarius while on the bridge and the game will hang (sorry I dont know the weapon because I dont play it anymore)

Get a certain number of skill points to unlock each of the cheats:

Effect - Code