Diesel Guns Alpha v0.7.9.0

Diesel Guns Update Alpha v0.7.9.0: Added new guns, mega guns and bulldozer.

Release notes: Added: new weapons: minigun, bio and laser. Added: mega weapons: harpoon and helfair. Added: giant bulldozer on Industrial. Added: can pick up barrels with a ram. Added: can charge barrels with grenades and/or bio rifle. Added: Anti-Missile Flares (R button).
Improved:VFX for guns. Changed:machinegun skin.