It takes me back to the old shooters of the early 90's. The gun is very accurate even at long ranges, so it's easy to snipe a lot of the enemies way before they can see you are there. Also I had some issues with the camera at first (too sensitive and drifting), but they seemed to go away if I made it full screen (could be an issue with my mouse). If you update it, it would be cool to see a new enemy type.