Nuketown Puzzle?

i heard on another forum that the screen turns black, you hear a strange voice that says, start simulation.
then plane fly over head drop nukes and kill everyone not inside, then all maniquiens come back as Zombies that don't die ends the match when every plr dead ( NOT CONFIRMED YET IN ANY MATCH)

At the end match screen a nuke goes off. That is all. There is a youtube link on the forums

The only secrets (gimmicks) i've found out up to now is that the Welcome to NukeTown sign shows the population as the number of players in the match eg.12

Also the timer clock in one of the corners is actually a countdown timer to the match ending.

Other then that i don't know, i've shot all the heads off the maniquiens (or at least i think i have) but it took some time as all of the maniquiens in the playing area change places every time you start a new match.

If there is a secret, i think someone will discover it sooner or later.

I haven't done it yet. I am waiting for a couple more of my friends to get the game and then give it a go. But what I do know is that all of the mannequin heads must be shot off in under 30 seconds. So it will def take some preparation.

to add onto what SwitchDegree said, they are right with the 30 sec and also im sure it has to be all mannequins incl the ones outside the playing area.

youtube.com/watch?v=tj_SmzWRp5A

under 30 seconds plays the Easter egg song
Sympathy for the Devil
by the Rolling Stones
takes some practice but once you get it, it plays the song over the loudspeaker on the map