Hi Scratchers, just use wasd or arrow keys to move around, and point your mouse and click to hit the zombies. There is a shop that you can access by p and there is 3 upgrades for both the machine gun and pistol gun selections. The 1 key is for pistol and switch to machine gun by tapping 2. Have fun!
Thank you to @warfame for his awesome youtube tutorial, link is in the comments!
