Escape from Mystery Shack

You suddenly lover to collect a backpack camp, and go into the mountains, where you will be alone with nature. In this day you will received. You never plan their travels, and it adds a special flair to them. In the mountains, you are in a storm and you had to run to find shelter from the wind and snow. You found an abandoned shack on a mountain top. But when you entered, the door is locked from the outside. Look for a way out.