Big Gun
From Project Nomads Unofficial Wiki
By adding two gun towers 3 of any characters you get the big gun. The big gun is a missile type gun tower with a low fire rate and good damage also having the same range as Goliath's gun tower 2, Its health is quite low for being a high tier item in the game, but the armor makes it very durable.
Obtaining
In chapter 1, part 4 "After the Storm", Travayne hands the player a red level 1 guntower along with a red Big Gun.
In chapter 1, part 5 "The Athanor", a red Big Gun is hidden behind an island, in front of the Bomber 3 garage.
In chapter 2, part 5 "The Store of Artifacts", a red Big Gun is available next to the Sentinel lighthouse.