Jolter

 is a gun that fires large, rectangular bullets with high knockback.

Trivia

 * The Jolter is a reference to the Warhammer 40k weapon, the Bolter, typically used by space marines. However, unlike the Bolter, the Jolter isn't an explosive weapon. The gun's sprites also reference the Bolter, as they are named Bolt_Rifle.
 * Having the Demon Head orbital while using the gun that can kill the past may crash the game and force you to restart the floor.
 * The Synergy "There is Only War" is a reference to Warhammer 40k's iconic tagline: "In the grim darkness of the far future, there is only war."