Like the Freezethrower, the Shrink Ray is beloved for its wacky effect rather than the damage it deals. Shooting out a green ball of energy, the Shrink-Ray can appropriately shrink most enemies down to the size of a mouse. This makes them incredibly easy to kill, as a swift stomp of your boot is all it takes to finish them off.
The Shrink Ray is an excellent gun for strategic use and the occasional laugh. If you find yourself up against a large group of enemies, the Shrink Ray is a great way to isolate high-value targets and kill them quickly. Be careful though, as shrunken enemies will regrow back to their normal size after a few seconds.