Clunky but you can download free! I worked it out and I had fun! Get close and use "e" for mind control!
I have played it all the way through and each level is different and interesting. It only saves automatically at certain locations, but you can quit at any time and then continue when you come back. There is enough variety to keep it fun; even though not as challenging as the bad guys in some other games. It is a Shooter where you just keep shooting; so what do you want for free? Download at: www.topfreepcgames.com/
A KEY is mind control - Get close to the person (face to face), even if he is shooting and press "e". He will die and give up what he knows. It usually shows visually what he had seen. The game will end if you shoot that person of interest. Just continue again and use "e" on him.
It may not be the Best but I had fun. I am always looking for bargains and I have played some that were a lot worse. KEEP SHOOTING and keep on GAMING!