Abandoned Forest House

You found yourself in an unknown place. This is some abandoned house somewhere in the woods. You have to escape quickly. You're trying to open the main entrance. It does not work. It has to work on some special mechanism. It seems that you need 45 coins that are differently hidden in the house, to open it. Some are not hidden, but what about the rest. Other coins are hidden in boxes, cabinets, and so on. You will only get to them by solving riddles and finding secret codes. Can you get out? The last coins are hidden in the heads of the demons, but you only get them when you find right time on the clock. Have fun.