The Merc with a Mouth and Spider-Man team up in this irreverent as you might expect story (at least for three of the issues featured here).
I don't think I'll ever get used to any of those hyper-muscled art styles so common in Marvel's more violent, "adult" franchises and stories (i.e., Deadpool, Venom, Max). I am well aware they don't use those kinds of styles in all of their more adult themed (and, that they use it in plenty of their teen-focused) works, but this isn't a case of getting used to it by force or constant exposure. I just can't get into it.
Taking that into consideration, it's the only real hang up I have with this volume: I love Wade and Peter's "relationship", always have, and I love reading anything including both of them. I quite liked the colors used in all the issues (reds and golds for the first three, lots of blues for the fourth, and I particularly loved the final issue). Plot wise, Hit-Monkey is so absurd it works, Deadpool dealing with a band of corrupt hillbillies was kinda funny, and I loved the origin story of Hit-Monkey, ok? Honestly, I really loved that last issue.