www.deadm.com

The power required to use the gun would be generated by a large battery back pack. The electricty from the telsa coil could be shot from barrel the barrel being made of a non conductive material with a long metal rod in the middle almost like a lightning rod. Due to the high voltage/amps the tesla coil generates and the conductivity of the water in humans the first hit would be an instant kill then nearby enemies would take a lower fraction of the damage as it jumped from person to person.

Advantages:
First hit is 1 hit kill
Damage jumps from person to person

Disadvantages:
VERY heavy makes you move slow
So much energy required only get 1 shot per round

C&C Red Alert!! w000t.. Old skool >_<

Sounds awesome.. but does it excist in real life?

Technically a Tesla coil Cannon hasnt been used yet but yes tesla coils do exist just they are extremely impractical sence they use more energy then they generate

Hmmz.. well, C&C Red Alert 2 has these little tesla troopers.. Wich Red Alert 1 also had in the expansion pack. So if there would be a tesla suit.. the one of Red Alert 2 would be most practical.

Im going off topic now but Red Alert 1 (the greatest game ever) had those Teslas and they rocked my socks, whenever i played as the russians i would use them!!
mini pic;
http://img115.echo.cx/img115/9499/teslacoil6wy.jpg

That mini pic is from C&C RA2, The Tesla Coil

The tesla troopers however from RA1 Aftermath, had these big yellow backpacks on them and some kind of staff (like that watergod guy with 3 points on the staff). If I remember correctly..

cool and it sounds like the things that the dark troopers carry in battlefront II and it could be made so that u hav to charge it up to fire and the longer u charge it the more enemies nearby can be affected