Honestly from what I've played so far it's rather fun and certainly different than recent FPS games. The graphics are... adequete. Not that great but ok. Animations are a bit bad, though - particularily girls walking (the twins at the start just look sooo terrible when the walk off).
The gameplay is fine though, lots of run and gunning and sillyness. Granted I'm not exactly far in it, I played for maybe 30 minutes but this is my first impression.
The one issue I hate is that Vsync turned on makes the game input super choppy. The mouse is completely unacceptable. With Vsync off, it's nice and smooth, but runs at 150fps and causes a lot of CPU and GPU usage which is totally unecessary (CPU 50%+ GPU 80%+. For comparison with Vsync on my GPUs are at around 20% usage... CPU I don't know but my fans never sped up (they did with vsync off).