Hard Reset Redux is a beautiful game and I enjoy every time I came back to play it.
The Surgue is a very smooth game technically, hard as hell and the more you push forward the higher the frustration. I've not reached NG+ yet but my little bro did, he has every piece of gear and weapon maxed out, all his weapons proficiency at lvl 24 or higher and still he dies extremely easy by 1 hits in a daily basis. No matter how crazy good he's at dodging at the point he is just 1 hit and he dies :/. And yes he's using the best chips availables, core level 120+ and more focused into survival than damage.
Same goes for Turok 2008, love it, period.
Recently found a way to play Alien Colonial Marines, it's spooky and hard and with this strong PC of mine the game runs and plays so smooth that I tend to be killed when enjoying the enviroment. Fighting Aliens and expecting at any time an ambush from any possible way makes you to stay alert at all times. (Awesome when you see a lot of them running towards you while they are still in the ceiling or running and jumping from wall to wall in a corridor)