One weapon, 10,000 monsters

[Omega V]

the laser pistol from Nazi Zombies, small, light weight,(I'm assuming), and minimal recoil making it easily duel weildable, and an absolute instakill to the target monster with enough splash damage to kill those immediately adjacent.

for real world weapons? The Russian PPSh-41 sub-machine gun with drum magazine. Powerfull, high rate of fire, makes a sweet sound, and Nazi Zombies proven effectiveness against the undead hoards.

for almost real world weapons? The upgraded PPSh-41 from the Der Reis map, Aka the 'Reaper': 100 round magazine, increased damage, an even sweeter sound, and is covered in embroidered chrome. The demon hoards wont know what hit em.

 

[Trivun]

Can I have the Machina weapon used in Operation Mi'ihen? That would be pretty damn awesome, unless these monsters have some kind of forcefield. Then I'd be screwed...

 

[pyro45686]

the golden gun off james bond and every time you get a kill it adds a bullet to your clip (so you dont have to change clips with your mountain off limitless ammo)

 

[pyro45686]

or the grenade launcher off red faction one (hell any of the red faction guns) and a light saber

 

[Badong]

Mecha Gandalf. Why? Because he's fucking awesome.

 

[Mr Cwtchy]

Funny, when I read the title I thought of this:

Spoiler

Anyway, I would go with a Falchion. Because those blades look sexy.

 

[llew]

Dante's Ebony and Ivory pistols and his Rebellion sword, shoot the fuck out of everything i see and if they get too close for my taste slash their fucking heads off

 

[Byere]

I can hold Bruce Campbell in my arms. He's all the weapon anyone needs.

THIS!!!!

More seriously, a Chrono-Rifle from Red Alert 2. It'd need to be elite veteran status though, otherwise it'd take forever to remove a single monster from time (whereas EV status takes a single shot ro remove them)

 

[BaldursBananaSoap]

This.

 

[JoshGod]

L5x implant
(im going take infinte ammo as no recharge)

 

[liveslowdiefast]

Nucluar bomb, but only if i was at a safe distance.

 

[Buizel91]

I'd go with a rocket launcher...

or the new lightsaber things =')

what new lightsaber thing?

http://www.dailytech.com/WickedLasers+Unveils+Lightsaber+Powerful+Enough+to+Set+People+on+Fire/article18681.htm

That =)

 

[Woem]

A katana.

 

[The_ModeRazor]

Infinite ammo?
Seems like a job for the Pancor Jackhammer... although I'm just yer avarage 17 year old, so probably the recoil would be a problem. Though I guess that it has some built-in recoil reducer - after all it is an automatic shotgun.
Then again, it's still better than going up against them with a melee weapon.

 

[Edavies696]

the true dragon sword (katana from ninja gaiden 2)

 

[Kruxxor]

2 handed butterfly axe, definitely.

 

[Edorf]

I'd probably go with a grenade/rocket launcher

 

[Withall]

Dual lightsabers. Deep tissue distruption and instant cauterization, as well as a very real chance of cutting of limbs. Just swing and hope you don't make a mistake.