Combat works a bit like in dead island. You have melee weapons and guns. They are all used from a first person perspective. Guns and ammo will be fairly hard to come by, though. And guns might not be entirely reliable.
We would also like an ability to modify weapons, like adding spikes to a baseball bat or attaching a scope to a hunting rifle.
There will be free world PVP where you can choose to team up or attack anyone at will. Players can gain levels to become slighly more powerful, but levels mainly lets you take on harder enemies. We would like you to often have to consider if hiding is a better option than attacking an enemy.