So, Minmax is showing his badassery by headbutting a demon to death. He also no longer has a torso, if the next to last panel is to be believed.
For some reason Complains is carrying a around a piece of jawbone in his right hand while jumping around and balancing on the back of the demon. I guess is it's supposed to show that he killed the other demon he faced earlier. Then he's suddenly standing there in the penultimate panel and the demon is nowhere to be seen.
Also, my first reaction:
Fumbles: "What do I do?"
Of course what he'll actually do is become incredibly powerful and badass, while likely getting some artificial limb or something in the process.