I love the visuals and sound, but there are a few mechanical problems that really hurt my enjoyment:
1. It's way too easy to get stuck in doorframes, and that makes it a huge pain to go around.
2. The camera movements are very choppy, which is tiring on the eye.
3. Because you don't know where the admins are when a level starts, it can be very frustrating to know how to start. For example, in level 3, if you go up to the computer, hack it, and then you're facing a straight hallway with an admin coming at you. That feels like a cheap trap.
I like the concept and presentation, but the mechanics need a bit more polish to shine.