
Look for another way out:
The timer starts. You can save throughout the tunnel part of the game and it will stop the timer.
Turn around from door. See a pile of carton boxes right of desk.
Move the boxes out of the way to reveal a rusted door.
Use the screwdriver taken from the alcohol boxes on the hinges of the rusted door. Exit.
Tunnel maze:
See the start of the tunnel maze.
Follow Option C clues from the Dust and Dirt book to...