Doors

The doors are your main means of defense against the robots. If a robot chases you, shut a door to block their path. If they get close enough to a closed door, this will immediately force them to cease their chase and, depending on a robot, teleport away.

The doors need to be used in moderation, since every time you close a door, it results in absorbing a small amount of radiation. Doors reopen on their own after 5 seconds.

Starting with version 1.7, the doors are equipped with special buttons with arrows, which let you close them from around a corner. They are invaluable during the Ghost Challenge.