Cluster Grenade

Cluster Grenade is one of Joshtick's upgrades from the Slush Invaders: Game. It allows him to toss 3 grenades instead of one.
 * Cluster Grenade is unlocked after beating Galaxyrise's bonus objectives.
 * Send Big Blue flying higher than the visible sky.
 * Defeat at least 4 Azures.

Trivia

 * None