A trained killer would never fall for any of the tricks I can pull with any of those weapons. I do not even think I would be able to muster a plan in five seconds. I would probably still stand in the middle of the room out of panic and caught in the dilemma of which weapon will be most useful 😛 Hiding behind the door and sneak attack wouldn't work. He's a trained killed and I'm a predictable amateur. He'd expect it. Especially when the room is dark 🙂
If I had a good couple of pounds extra for weight I could probably charge the door and tackle it down on him, then make a run for it. That would probably be my thought-out plan since I can't imagine I will do any good with any of the weapons. If I'm too light, I'll be dead anyway. If my weight is enough, then I just might knock him down with the door. That's under the assumption that the door is weak 😛
Otherwise I'm dead. What can I say: I'm an untrained realist and he's an elite with a gun.