Ultimate Multitool

Ultimate Multitool is a boss that was added with the release of the game.

Design
Ultimate Multitool has a green circle base. It has 3 different barrels:
 * (bottom left one on the image)
 * (right one on the image)
 * Decalibrator (top left one on the image)

Technical
All turrets of Ultimate Multitool are automatic: meaning that usually, only 2 are active on you. One turret releases slow, but powerful bullets. Second one releases stationary high-damaging blocks and the third one behaves like a basic auto-turret. Being AI-controlled, Ultimate Multitool is unable to use the growing feature of Decentralizer.

Spawning
Spawns by a randomizer.

Countering
All turrets of the Ultimate Multitool are automatic: you can always avoid at least one. Avoid the Decalibrator turret: it spawns stationary, but high-damaging blocks capable of killing a glass-build in a matter of seconds. They have lots of health and decent speed and make it harder to fight the boss. The Warden Turret, however, can be neglected by high penetration bullets, and with enough bullet speed and reload, the Decentralizer bullet can be easily dodged. This way, you can somewhat slowly, but effectively kill an Ultimate Multitool.

Fighting in groups makes jobs far easier: you will only have to deal with one turret. Again, try to be at the side of Warden Turret as it has mediocre penetration and can be dodged. This way, you can maximize the chance of killing the Ultimate Multitool by yourself.

Trivia

 * The used to more closely resemble the Ultimate Multitool. It formerly resembled the Auto-3 and lacked the Twin turret, making it essentially a Level 15 version of all of Ultimate Multitool's weapons.