On this page of the Ratchet & Clank Rift Apart game guide you will find a description of the Elite Security Detail boss fight. This is a confrontation that takes part on the planet Cordelion and from the description you will learn how to attack the bosses and how to successfully avoid their fire.
The confrontation with the bosses occurs during the final phase of your stay on the planet Cordelion. You must, as part of your progress in the main storyline, liberate the Juice monster. He has no hostile intentions towards Ratchet. Help Juice in eliminating regular enemies or observe the situation from afar and not engage in combat (Juice will not die).
Elite Security Detail will join the battle after some time. Enemies will enter the arena through a previously closed door. In this case, you should definitely provide assistance to Juice in attacking enemy machines. Elite Security Detail are machines that are a variation of destroyers.
You can use different weapons to attack the bosses in this battle. The Negatron Collider or the Lightning Rod (able to temporarily paralyze machines) can be useful. You may also consider using the Glove of Doom to summon additional allies (little robots).
During the battles you better watch out for the powerful laser attacks of the bosses. As a reminder, you can jump over purple laser beams, or help yourself by using the Phantom Dash ability.
Bosses can also use a rocket barrage, and in these types of situations the best option is to run sideways. However, you can also use Hoverboot or Phantom Dash abilities.
Take advantage of the fact that you can pull your hero to nearby crevices, and also return to a remote ledges where you have used the crank earlier. This can help you avoid situations in which you may get overrun by bosses. Also, it makes it easier for you to launch ranged attacks.
Don't count on enemy machines to stay close to where the Juice was released, as they can get close to you and are also capable of making long jumps - run away from where they plan to land. Be careful not to fall into the tank during the battle - don't get pushed down into it and rely on double jumps regularly.
Attack bosses one at a time if possible, so that as you destroy more machines the effectiveness of their combined attacks will decrease. After defeating the bosses Ratchet will follow Juice and continue his journey.