The Harpoon Gun - Poseidon's Alter-Ego
Non-Pack-A-Punched: Works similar to crossbow, you shoot it at zombie and zombies go after the harpoon, after set time, it creates water-type of explosion and kills all zombies, if the zombies don't die by the explosion, rest just starts to vomit and then die off. Gun has ripped metal parts, that reveal water flowing inside the gun, enhancing water features of the gun
Pack-A-Punched: Instead of water flowing in gun, it is now lava. Water-type explosion is changed to lava-type explosion and after explosion is done, it leaves lava pool on location of explosion, which if zombies run over, they get caught on fire and die off after set of time
Ammo: 1/15 non-paped, 1/30 paped
This gun idea is actually designed to be featured at my upcoming map after ones I am working now: Rainy Death, which in my opinion fits the theme