Alpinist Escape

Your friends took you to skiing with them for the first time. We were supposed to have fun and hang out. But they had a different vision of fun. Halfway we came across a house and decided to take a look inside. I entered first and heard the door lock behind me. It seems that for them this is all a big joke. When I get out of here, I'll get them for this!Use your wit and explore the cabin, to find means for your escape.