First off, I really like the graphics. They remind me of games such as Doom and Blood. The atmosphere and setting is also really creepy. However, I don't understand the language used in the game, so I couldn't really understand what was going on. The combat was a bit hard and I had to retry many times. I also had trouble regarding doors; I managed to open the first one, but I couldn't open the second one and I became stuck there (after defeating the first boss).
It needs some polishment, but it has potential and it's a nice tribute to old FPS games. Good job!