The Missilus is a TESTBED boss that was added on an unknown date.
Missilus has an invisible rectangle base with ten Twin Rifle turrets on the back and front, and on the sides of the rectangles that hold the twin rifles there are many, I mean MANY missle launchers. In the middle there are eighteen Staplegun turrets, and large minion spawners. Last of all, in the back there is a large and wide machine gun barrel.
Like the PDK-175000, we don't what minions it spawns. For now, this part will not be very vast.
It's missiles are strong, tough bullets which are hard to navigate through because of the amount of bullets and missiles it has, so you would need alot of defense including offense. You need at least more than or ten Hexa Builders and Tri-Constructors. Probably Splitters will be useful for defense and offense as the minions are tough and deal much damage. Oh yeah and I forgot about the Staplegun turrets, use more Trapper-class to fend the fast and small bullets, and remember they are small so add Max Health & Movement Speed. This boss is almost defenseless, but has very much in offense and can kill tanks in an instant, using Bullet Penetration it is easy enough for you to pierce most of the bullets using high penetration tanks like Obliterator. Swarm type will be useful when played correctly. Acid is useful as it will deal constant damage to the boss, also a few Surges and any Freezer upgrade (except Disintegrator) to paralyze the boss. Then, slowly kill the boss.