I know I shouldn't complain about details in an alpha state, but here they are anyway:
The gate should have a "No entry" sign telling the player that they can't go back once entered.
Also some stairs have a weird first step.
The clips on these stairs.
Well this is actually not important, but in the rare occasions that a bot goes there it fails to get out the window, so maybe turning one of the windows into a door would fix the problem.