The Ripper is a combo weapon that can be made by combining a Cement Saw with a Saw Blade. With its cement blade replaced by several serrated saw blades, this makes the weapon more like an easier-to-move circular saw. Like the chainsaw, Chuck/Frank can injure zombies just by bumping into them with the Ripper's motor running.
The Ripper is a heavy weapon; it cannot be stored in the inventory and injuries will cause Chuck/Frank to drop it.
Primary: Tap start the Ripper. Tap again to swing the Ripper horizontally, shredding several zombies. Awards 100 PP for each kill, or 50 PP with a Scratch Card.
Combo: Repeatedly tap to swing the Ripper back and forth horizontally.
Secondary: Hold down to swing the Ripper vertically, bisecting a single zombie. Awards 150 PP for each kill.
It may be a reference to the "Auto Axe" weapon from the Fallout 3 add-on "The Pitt", or the Ripper from the entire Fallout series. Also could be a reference to the Ripper from Dead Space due to similar appearance and namesake. Another reference is the 2003 Horror Film, High Tension.