A Soft Shuffling Sound

(By the way, there wasn't a whole lot left of that lantern to kick.)

You move cautiously down the long corridor, as detailed on the map that I will eventually email to you. The blood drops become loonger and farther apart, as if the wounded person was running. You pass the dripping feeder pipe high in the wall on your left. You then pass a small, collapsed maintenance tunnel. The Survival DC for tracking this trail is 5, so you do not need the Track feat or a rank in Survival.

Up ahead is a large, wall-to-wall, floor-to-ceiling steel grate. It is heavy and thick, and it was installed at the end of the war to prevent another warforged incursion. Beyond the grate the sewage continues to burble out to the swamps and away from the current adventure.

And just to the left, is one more maintenance tunnel, five feet wide and eight feet tall. The tunnel goes in about twenty feet before turning a corner. You hear a soft, shuffling town behind that corner, and a voice calls out "I've got a weapon! You come back here I'll kill you, I swear!"

Someone is very panicked.