Beat Prey. Despite the Steam Clock saying it took 12.3 hours, the in-game clock said it was 11ish hours. That was with doing some side missions (Not all of them, just the one's I felt were needed). Overall I was pleasantly surprised. Ended up enjoying the game more than I though, and I would say it's easily Arkane's best when compared to Disho 1 (Haven't played DisHo 2 yet). I'll start off with the negatives though just to lay a foundation, since it's far from perfect however.
First I found the difficulty could be a bit random. The beginning two hours are by far the hardest (Especially if you don't find the shotgun ASAP). Then things start to even out pretty well with a few hiccups here and there. This might have been due to going all human and using no typhoid skills however (Since I think some of the enemies are weaker to that). However by the end of the game I was basically doom guy. Had put points in having a maxed out shotgun, full speed movement, and slowmo with damage boost. Enemies became a non-issue especially in the final moments. Since I was able to run past them or demolish them easy. Which is actually something I reall liked. The game did a good job of offering the "Play your way" for the most part.
The second negative I had was that some of the searching around could get rather tiresome. While this might be more a personal preference, it's very easy to accidentally miss things you need even when you are taking your time (Which I did). There were more than a few moments I was running back and forth on mission pointers not realizing I had missed a random keycard on a dead body and such. Thankfully this seemed to be more an issue with the side missions than the main quest.
Lastly the Zero Grav stuff was just kinda there. To me it ended up being nothing more than busy work (Since you move slow in space and they give you large stretched to cover) and weaker than usual combat (Zero Grav is filled with the sacks that throw exploding enemies at you while you move slow. It's as fun as it sounds). Though when it was in smaller settings the zero grav controls themselves and exploring was cool at least. When you didn't have to worry about enemies.
I would say those three things are really the only big negatives I had which impacted my enjoyment. Since there were times where both would take me out of the experience of searching around the space station for the truth.
The only other gripe I really had was that the Thyphoids themselves I found rather uninteresting throughout. The entire time playing the game, I was wishing for a more monster Alien Presence like the Xenomorphs. I feel like that would've worked so much better, especially when it comes to monster designs. The whole mimic thing isn't even utilized all that well I feel. I also wouldn't call any of the monster designs here all that interesting even though there are more than a few. That's more of a nitpick though, since it doesn't really impact the game itself too much.
The positives on the other hand were making me feel like I really could play my own way for the most part (More than a few times I completed objectives with pure force or by being creative with making a way of entry). I really liked the aesthetic of the space station itself, and the gameplay actually worked quite well when everything clicked. I played the entire game on M&KB (Which I rarely do) and it all felt natural and worked well. The story i'm a bit at odds with. I don't hate it, but i'm not exactly over the moon for it either. I recommend watching after the credits however or you basically miss the real ending of the game. It was the ending along that made me turn around on the story aspect rather than just write it off.
Overall I'd recommend it. If you like Deus Ex or Bioshock, I think you'd like this. Just in the case of those who prefer bioshock more. This game will require a bit more patience from the player at least until you start to make good neuromod investments.
Still shouldn't have been called Prey though, and I still want Prey 2.
**Note: The port is really good. Ran everything at Max at 60FPS on a i7-3770, 1060 6GB, and 16GB ram. Only one area dropped frames and I think that was an issue on my end and not the game itself. In case anyone was still on the fence about that.