A Thing

You spy with your little eye a window with a large gash in it. Clearly it has been stabbed by some foul-mouthed ill-breathing ne're-do-well. It's too late to save it now, sadly. You clamber stealthily through the damaged window, it's blood staining your clothes as you do so. With a loud "thud!" you fall into one of the rooms in the office building.

The room you are in is as generic as they come, a real adventurers treasure trove! Two rows of boring neon green desks stand covered in dust and mud and blood and phlegm and cobwebs. A few desks have the occasional computer or stack of papers or human skull, but they're generally pretty empty. To your left is a door with a sign above it marked "Lobby", while to your right is a door with a sign above it marked "The Other Way".

What do you do?