The first zombie you hit took a few hits so your stamina was down and when you killed on the power attack it refilled immediately. Very nice!
I got the baseball bat book that lets you craft baseball bats in one of the houses I cleared and it immediately changed my whole build plan. I started spending points to compliment the baseball bat and started working on gathering what I needed to craft a bat. That is how excited you can get over books you find. They can cause you to throw out your whole strategy and go a different direction. Of course, I didn't realize how hard it would be to craft a bat...
/baseball bat parts