Rapid fire, as the name might suggest, shoots out a large amount of bullets. The projectiles have significant spread and is very inconsistent at longer ranges.
One of the most underused and powerful weapons in the game, gatling gun can potentially be one of the first "godweapons" unlocked, provided the player always makes sure to use the previous levels. It rapidly sprays a high damage cone of death at its target with the large amount of projectiles it creates. It also has a use as a "pit weapon" as it can dig enemies into a very steep and deep pit.