I'm still working on the gfx and its going pretty well but the idea is that it is a weapon that is similiar to the goonadier. It shoot out little red pools of lava, if someone steps in these pools of lava they catch fire. Cuz the goonadier sucks, I think it should have a bit more range and the lava slime lasts a bit longer. You start off with around 60 shots but can extend your maximum ammo by buying it from the trader on the dropships.
O yeah one more thing the classes that should have it should be Marine, Medic (Cuz they haven't got a lot of weapons) and sapper.