Couple of new things:
The HUD have had a complete makeover.
Health, stamina, hunger, thirst and toolbelt now works as intended.
I've added a firstaid-kits (restore full health) and energy-drinks (restore 25 stamina).
Hunger and thirst (green and blue bars) slowly degrade over time, can be filled by eating or drinking.
Thanks to the three awesome people mentioned below, there is now a zombie to play with and try to polish the AI.