Well I haven't found the door but I have fallen through the wall and got stuck when I crouch and run against the wall on the floor with the flaming control panel that has no platform to go higher
Hey Beef :) there's a switch that opens an otherwise locked door in the silo that you then ride an elevator to another level, which leads to the crouch door :)
Thanks again for playing and your input, this really helps me fix and change things to make the experience better for you all!
