Allow me to introduce you to my handy friend effect/mapping_helpers/airlock/unres. See those white lights coming from the interior side of the gulag doors, or the two main medical doors? These allow players to open the door as if they had access so long as they're opening it from this side. In the past, we used to use buttons to allow the players to open the door to get themselves out, in the case of maps such as boxstation or deltastation before this feature was introduced.
I always presumed that meant Unressurection. I've been using it to ensure all my maps have airlocks that stay dead!
Nice map, would send Facebook Friend request. Can we get a test merge?