Alright, here's how the game works:
The first post will say what happens/happened. You will then say what you would do. Even if it is a joke.

You are in a fight using swords. Your opponent knocks your sword out of your hand, then gets you on the ground, his sword near your neck. He removes his helmet to reveal he is, in reality... (Choose whoever you want, and then pick your reaction.)

You could lock it here and put it in the right section. :/
This should be a "What if..." game.

Why is the power out?

How do I have exactly 30 minuets to do something?

Why is he walking to my house now?

What did the guy do to piss the murderer off so badly?

I knew someone would answer that.
Either that, or something like "Just lock the door, stupid."

What if the murder had a tank/RPG?

What if he breaks down your door?

Call the emergency services with my cellphone, then keep an eye on him with a pistol in hand, just in case he doesn't bugger off, duh.

What would you do if you knew you would die of a heart attack at 1:30 AM Tuesday, and it's 7:00 AM Monday?

Dun want none of that. :/ I'm updating it about once a week.

I get out the house. After that I would either:

Go to the nearest of one of my neighbors' house that have a big family or a lot of people living in the house. Get everyone in that house in one room with only one entrance. Tell one of them to call the police and hope for the best.

But there I feel like I'm used them to protect my own life. So I could run. I have 30 minutes to run. I could run a mile in 7 minutes. So by the end of 30 minutes, I probably be four and a half miles away. And that's just running away.

But I know, the murder will most likely follow me when I leave my house. So If I can't run, I guess I'll just go outside and just wait for them to come. Might as well play it safe and un-screw a handle from a broom so I can use it as a bo staff.

That's the most creative I've seen so far.

If he's coming by the door step, I would prepare myself with anything that could kill him like a knife or something sharp or hard. I also put oily grease or any liquid that is very slippery to slip that murderer guy in case he's coming to kill me. I block all the windows with cupboards, shelves, etc anything that could block a window.

And since you say it's a two-storey house that murderer could use a ladder to go up to the window on the second floor so I decided to block the window there too. (And I decided to set up a trap for the murderer guy too.)

I would just give him my candy

Wake up.