Building defense is combined with a first person shooter to give you Palisade Guardian 2. Your objective is to keep your building from being gunned down. Whilst you have a vantage point you can see all incoming threats. In between rounds, make sure to upgrade your weapons, repair your walls, and survive as long as possible!
Shoot - Use mouse. Reload - R key. Switch weapon - D and F keys. Zoom in - Spacebar.