a flying shoulder to his jaw oughta do the trick

You've had enough debasement for the day, so you decide to try using your strength along with your wits. You bash your eyes before spinning and leaping, sending your shoulder to his chin. You hear a crunching sound and fall to the floor with him in a heap. He makes a loud grunt on the way down but never a sound after that. You don't take too much time to check in on his health, but you do manage to liberate his set of keys and, after a few minutes, find one that fits into the cuffs around your hands.

Your shoulder really aches, but that's a small price to pay for freedom. You go back to retrieve your shirt and then head off down the hallway. The only problem is... which way do you go?