the new thundergun
The Thundergun is a cannon-shaped weapon that fires directional blasts of atrociously strong wind, essentially a mega shotgun. It has no Iron Sight. It appears to be able to kill large numbers of zombies with a single shot, sending them flying backwards. Those who are not killed by the wind blast are thrown backwards. The Thundergun holds two rounds in a magazine, and holds twelve reserve rounds, as explained in wikia.
While zeus cannon is an advanced version of thunder gun, that have increased magazine size of 4 and carries 24 reserve rounds. It is best used as a reserve weapon, as it has a low amount of ammo and slow reload.
"The Thunder Gun"
"The zeus cannon"
p/s cant wait to play it!