Ok this is here in Discussion because it's not really very game friendly, I just wanted to tell of this awesome gun I came up with, but its possible that with modifications, it might be able to be implemented.
Okay, so, The BPD! I came up with this gun while watching a bad SciFi channel Saturday Night movie. In the movie, there was this man-made bio-weapon organism that absorbed ANY force thrown at it, and used it to grow more. So, sunlight, radiation, heat, chemicals, ANYTHING, it just makes it grow. It had a HUGE metabolism, of course.... so my mind created the BPD : The Ultimate Weapon.
BPD is the short acronym, heres the full name : BC-R P(A)V E-D IG(R)... or BCRPAVEDIGR. Biologically Chain-Reacting Plasmatter (Atomizing) Virus Externally-Driven Injector Gun (Reactor). [yeah, I'm obsessed with ultra-complicated acronyms...] The *unofficial* LONG name : "Baker Pave Digger". The short name, BPD, officially means Bio-Plasmic Driver, but unofficially.... its known as the BPD : Big Pwnage Device. Yeah.
It is actually very close to real science, the only part of it that is impossible to our knowledge (or we just haven't found an example of it yet), is the Plasmatter Virus. Such a virus works JUST like normal human viruses do, except its made of Plasmatter. I.e. , Plasma acting like a semi-solid for any number of complex reasons. Plasmatter is as hot as plasma (i.e. , SOLAR), and is often considered explosive when raw. This isn't raw. Anyway, a plasmatter virus can't infect very well. Any part it would infect through is incinerated rapidly on contact. So it needs help.
Let me explain full name: Biologically Chain-Reacting = it spreads its infection through anything biological; Plasmatter (Atomizing) Virus = the virus itself, which certainly does "Atomize" anything it infects; Externally-Driven Injector Gun = unmounted injector gun, think of a syringe on steroids that looks sorta like an RPG Launcher without a grenade in it, most of it looks like a tube... with BIG hand holds.... its Externally Driven... by YOU. In other words, its a giant syringe that you have to jab into the target and fire; (Reactor) = its self-replenishing. not that it doesn't use ammo - it usually needs the plasma tanks recharged after a few shots, but it creates the plasmatter virus inside a reactor unit within the gun. The plasma tanks provide the plasma, which is made into plasmatter.
The bottom line is, this gun is melee only, you have to jab it into the target. The needle is pretty thick, and razor tipped to pierce solid concrete if it needs to, as long as its swung hard. Once you are infected with the virus, you have about half of a second to live before you turn to ashes, disintegrated by the plasmatter. ANYTHING that grows at all, has ANY sort of metabolic functions WHATSOEVER, will meet their doom at the hands of this weapon. It doesn't hurt, it kills. Period. And there is NOTHING thats "Immune" to PLASMATTER. The temperature of a sun is not resistible...
The reason I said it would be hard to implement is because it would have to be an insta-kill weapon, or else you would be seriously distorting its function. Also, the only possible balancer for THAT would be to make it use ammo (plasma, of course, to refill those plasma tanks I mentioned). So it would be a melee weapon that uses ammo.... hmmmmmmmmmmm.... Still, if you think it would be cool in the game, give a shout, as well as suggest how to balance it so its not too overpowered. Just DON'T suggest that it be anything less than insta-kill. That would be a travesty. So, drop me a line on the BPD : the Big Pwnage Device (or PWNage, as its usually written) [and yes, that's SUPPOSED to be a takeoff on the BFG]