This is the heavy artillery of the Lyorta world. It uses a very large glyth crystal giving this weapon the ability to shoot a cannon blast of glyth energy in a single burst. This can heavily damage airships and ground units alike and forget it if you get hit directly with this. It's heavy and tends to be carried by straps. The front end is more or less a big blade used for stabbing through heavy armor.
hmmm i can see this being something that would eventually end up in fallout as a customized weapon
I can't imagine anyone wanting to carry that large slab any distance. I mean that thing easily weighs like thirty to fifty pounds. Not very economical fire power too. Only good as an anti tank weapon really.