Played for a couple of hours on 1.7.1.4, and I did not really enjoy it. I understand the idea of making the game more stealthy, but having to crawl everywhere just seems a tad too much. Crouch running seems to alert zombies within a huge range, and zombies often hear you way too easily. Even walking in crouch alerts zombies with their backs turned sometimes. (But I think you get the point on this) I have frame rate drops when ever there are a lot of zombies aggroing at me (which is all the time due to their new super ears). Spawning seems fine, didn't notice any huge changes. Could not pick up hatchet (no room in inventory) but that might just be because I don't know how they work yet.