The game at the moment is quite bad, but demo/beta is demo/beta.
I found a bug. If you go into your inventory [E], then click on Weapons and click on Ammo, you game will freeze, is there no frame connected to the button?
The game seems to randomly end after the first zombie encounter, now if this is ment to happen then never mind, but if not, well yeah.
The combat system is rubbish, sorry to say, please make it more dynamic instead of making it based off Pokemon games...
I will save this game, has alot of oppurtunity, expecially with multiplayer!
Good luck!