You make a break for it with the fortress guard, towards the upper levels of the fortress, running as fast as your legs can carry you (by dwarven standards, awfully fast; by other sentient standards, not quite so.) What awaits you at the other end of the hallway, though, is far from safety.
A panicked mob of dwarves push and beat their fists uselessly against a wall that couldn't have been there a few minutes ago. No, no, they can't just leave everyone to die! You begin to work your way through the packed crowd before the guard roughly pulls you back by the collar of your shirt.
"No, lass! They've abandoned us down 'ere! Come quickly, I've a way to --"
His words devolve into a pitiful gurgling noise, and his grip on your collar goes slack. Something hot and liquid splatters across your back. You turn around and find the guard floating in mid-air, a clawed fist of steel erupting from his breastplate. Behind him, a colossal, winged, spider-like creature, made of dull and scarred metal, with four massive arms -- one of which wields a hammer puny in comparison to its bulk.
The monstrosity tosses the dwarf aside, and stares you down, locking its molten red eyes with your own. The panicking behind you grows quiet in deference to the pervasive aura of fear settling over the area. It takes all of the willpower you can muster to not drop your pick and submit yourself to death.
There are open doors to your left and right, but it looks like another tunnel branches off a bit behind this thing. The hallway's wide enough to at least try and slip by it; certainly, it won't chase after a lone dwarf...