I just thought of this and It kinda just stumbled upon me once I saw HHG's video of SgtFrankWoods Breakdown of the zombies trailer.
Well at the end of the trailer he starts to explain these babies right here
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Well these (in case you don't know) are pressure gauges
Pretty self explanatory, anyways it started to get me thinking "What else holds so much pressure and kills a bunch of zombies?"
The Thunder Gun!
And it made enough sense!
you can make a weapon out of random pick up items through out the map and maybe, just maybe you can make this wonder weapon and maybe more!
Give me your ideas on the Subject

A nuke gun?

siiiiiiiiiiiiiiiiiiick is on my mind

Nuke gun?
Tell me more

And another idea is, with all this sudden lava around perhaps a lava gun

a lava gun would be gay

^Yea... don't think they would have that lol

the ray and tommy gun is all i need

Show me your skills!

i use the tommy gun because i am john dillinger

Pics

I will forever praise you now!