The Boomstick is a ranged weapon that fires four bullets at once in a similar pattern to that of the Shotgun. It can be found in Chests in the Underground Jungle.
- The name may be a reference to the 1992 movie Army of Darkness. About twenty minutes in, Ash brandishes his shotgun at the village folk attempting to take him captive and calls it his "Boomstick".
- Damage increased from 12 to 14.
- Use Time decreased from 42 to 40.
- Knockback increased from 5.5 to 5.75.
- Added to the game.