Lambda Land takes place in the Lambda Facility where you play as Gordon Freeman. In this world, Freeman instead has to turn on the core of the facility and clear the facility out.
I'd place the door slightly inside the wall so that it looks like there's space between this hallway and actually going inwards towards another room. If that door is a real door the player can actually walk through having the door that close to the actual outer wall perimeter will also give visual errors while it opens. Try to avoid that.
I'd place the door slightly inside the wall so that it looks like there's space between this hallway and actually going inwards towards another room. If that door is a real door the player can actually walk through having the door that close to the actual outer wall perimeter will also give visual errors while it opens. Try to avoid that.