Doesn't need any of this. The game is already way too easy for survivors. Closet spots need to be removed, smokers need to work and more campaigns which the SDK will bring.
Originally Posted by jaclipse
A new infected with some projectile attack would be cool, so you can shoot then hide
Originally Posted by Gearbox
In the developer commentary in the first level, Valve stated that they removed player collision simply because people were getting pushed off the roof during the beginning.