This complete walkthrough is for Level 13 of You Must Escape.
You are stuck in a room and will need to find the key to open the door in order to escape. In this level, there are more obstacles than before preventing you from finding the door key. The door key is hidden behind the air duct vent; however, you will have several steps in order to open the vent cover.
1.Tripod: You need to grab the knife on top of the ladder; however, the ladder is missing two steps. Grab the wooden stick hidden behind one of the telescope tripod legs.
2. Blackboard: Grab second wooden stick at the base of the blackboard.
3. Ladder: Go over to the ladder. Install two wooden sticks. Climb up the ladder. Retrieve the knife.
4. Lens: Look over to the top of the desk. Use the knife to prop up one of the blue glasses lens.
5. Telescope: Use the lens as the telescope eyepiece. Look into the telescope. There is a globe with U.S.A. Labeled. Grab the water bottle next to the telescope.
6. Drawer: Return to the desk. Unlock and open the top drawer with password “USA”. Get the piece of cloth from inside.
7. Eraser: Go back to the blackboard. Damp the cloth with water from bottle. Wipe the board. A set of number is revealed: 5647.
8. Bookshelf: Look at third layer from the top, each book is numbered. Tap on books in the order of 5, 6, 4, 7. A secret compartment will reveal. Grab the screwdriver from inside.
9. Vent: The air duct vent is fastened with screws. Use the screwdriver to loosen up the screws. Remove the vent and get the door key from within.
10. Door: Use the key to open the door and you have escaped!
