I bought it. Loving it so far. I just finished case 3. The combat is just ok. But the dungeon level design is superb and I'm enjoying the police nature to the game. Voice acting feels a bit budget though.
The combat gets a lot better as the game progresses. In the first few files it's pretty basic but by the end of file 4/5 it improves significantly. A Metroid situation might have been preferable, where you start out with all the upgrades and then lose them, but unfortunately with action games it usually takes a long time to get used to the complexities of the games, so it might have been overwhelming.