Weapons have always been a focal point of the Ratchet & Clank series, featuring traditional classes of weapons, as well as an exotic arsenal of guns. Something that has been tradition since the first game is the ability for weapons to level up as you use them. This will increase its power and amount of ammo, as well as even change it once it reaches a certain level.
A feature returning from Tools of Destruction is the ability to use Raritanium to upgrade additional features for weapons. This includes things such as more damage, more ammo and even more bolts.
