In the fourth part of the game, you will again have to help the young guy get out of the trap into which he fell. This time our hero found himself in some kind of underground bunker. Around the darkness and strange noises and groans are heard. It seems who is in the bunker, that is, and these are clearly not people. You will need to get out to freedom as quickly as possible. To do this, you will need to go through several rooms to the exit to the surface. But the trouble is the doors are closed. You will need to open them all. To do this, very carefully examine everything around. You will need to look for items that can help you escape. Quite often, in order to get to them, you will have to solve a certain kind of puzzle.