Would be a lot more fun the guards didn't turn/move so erratically. Seems 90% of the time you try to run behind a guard you get caught since they turn around constantly. Makes it more luck and less stealth.
A lot of promise and looks really slick but definitely needs some balancing. I.e. you don't really need to upgrade or use your player character with the right choice of turrets (turret then laser when you can).