This one was fun in the way that parts could be combined in many different ways to create a variety of guns to test and see which parts may do what. I ended up having the most fun with the [Any Grip] (Dueling Grip was what I used to find this) + Arc Chamber + Hellfire Barrel, since I found myself yelling "Rawr" everytime I used it. It was a little hard to figure out the controls, but I eventually found that [R] swapped weapons and [F] used your equipped ration. I manage to make my way all the way to the bottom. I'm still not sure what grips do, but I had fun anyways! It was a blast!