I swear, yesterday it was working just fine!

Every fortress has a small door somewhere, guarded by two sleep-deprived boots.

An empty room, a hole in the floor. Beneath, a new generation of brood.

A walkway suspended on a sea of cables, pipes covering every inch of the walls.

The Factory-City refineries can never stop working.

A trap is set on top of a destroyed building.

A narrow passage between two streets. Steep stairs going up, and something moving on the roof.

The ground under the wall is failing. Scavengers jump through the breach.