Use the short sword to behead the closet zombie and grab the bug out bag everyone should have packed. Shoot 3 zombies at the door, manually dispatch the other 2 and rush the door and gtfo. The ones at the Windows are irrelevant, zombies aren't that fast. Try to only engage the ones you have to, and keep your last 6 bullets for an emergency since noise attracts them. The molotov is useless, except to start a campfire lol, and the bat, can be useful in a few situations, but the sword will require the least amount of effort to kill the brain.