Let me start off by saying this game is in an amazing state, in my opinion, and I don't feel like there are many bugs at all. Just seems like a lot of work to be done on the servers to add more zombies and more content.
I hate to see some people complaining and submitting hate reports, the devs have done an awesome job with the game, also letting us play at alpha stage is a privilege not many companies have offered before.
our job is to find issues and report them to help make the game better or you could just buy the game now and pretend you got the discount pre-order price, then play it when it is finished. my reports are probably already known issues but here goes...
There is one issue that I feel is extremely important and should definitely be looked into.
I can literally die, re-spawn, then run to a military base or a well known location for good items, proceed to hide in a bush. Then change server and loot the good spot. Then I can rinse and repeat until I am fully geared up in a matter of 5 minutes or less.
other than that there is one bug or maybe multiple bugs that is causing objects, zombies and players to fall through floors, stairs and walls.