The Illumina Sword is a weapon. It is found randomly on a planet, and is immediately equipped when picked up. It can be returned to Turbogunninja to unlock permanently.[verify]

Using the sword swings it in a circle and heavily damages any enemies it hits. It can block incoming laser beams by either swinging it or holding it in place, and when powered up, will deflect them back at the enemy that shot them. It cannot break asteroids.

The Illumina Sword can also destroy carnivorous plant stems.