I took out a entire roaming horde of like 10 Z's with sledge hammer. Just start the swinging motion while getting near them. So they don't get the upper cut going on.Whichever recipe I get first: sledgehammer or barbed club. Once I get my sledgehammer though, I don't look back. Love that thing. I do keep a barbed club in my backpack as a backup for death runs (I play with toolbelt drop).