Left!

You take a moment to catch your breath, then decide to turn left. Once you start to notice the hallway looks familiar, you break into a sprint, Just ahead of you are the slave pens. A few of the guards take notice of you and draw aim.

"HALT!" they shout, crossbows raised.

You don't stop to answer them. Jumping over the cage of some unfortunate soul, you finally see some light coming from the front of the dome. Re-invigorated, you run your ass off until you're into the light, zig-zagging and avoiding the syringes being shot at the ground behind you.

"Close the gate!" one of the guards commands.

But its too late. By the time the doors start to close, you can feel the warm sands of the wasteland under your boots. And once you do, you keep running and running and you don't look back for miles.