This is a little something I made in an hour or two.
The only hard part was the eventing, I never tried to event anything even mildly complicated until now.
Eventually I got help from Camera (thanks), although both Ace and Placid tried and failed to help me (Ace came to the server, "examined my events" and left without saying a word, and Placid kept talking about V4 of variables which was no good to me either).
When you spawn you go up to an empty booth and choose either the F (fight) or the D (draw).
The last button does nothing, I have not been able to come up with anything to put there.
If you press F this happens

Here, you choose weapons. Press the blue ! to enter the arena.
Clicking once gives you information, clicking twice will make the weapon spawn.

After saying you are ready you are sent here. The walls will remain until both players are ready.
http://s897.photobucket.com/albums/ac171/dippindots326/?action=view¤t=Blockland_00093.pngThen you fight to the death.
When you press the D, you will be sent to one of these

You will lose all but 10 health. That way only one shot from a revolver will kill you.

After 5 seconds a revolver is spawned and the faster clicker is the victor.
Here is a picture of the whole thing,

It has 1111 bricks.
Rate if you want.
I'd prefer only constructive criticism.