Type B:
So i am fighting the X-ATM Scorpion which is standing in front of the Underwater Reactor in CD2. After it summons those little robots, i´m lost. I do not stand a chance against them. They are killing me in around 2 rounds xD What is the trick here? My Group is between Level 30 and 34
Bolt protection is your best bet in this fight as both X-ATM and the opts have a bolt-based attack; after that, fire protection can also be a nice bonus for the main boss' W-Flare. If the gun/Laser attacks are causing issues, then a Protect Vest can be handy to reduce Shoot element damage.
When the X-ATM's tail goes up, you'll want to hold off on attacks and bolster the party in preparation for the opts coming out and also to avoid counter-attacks from Tail Laser Mk.2. MBarrier should be a priority as you'll be getting hit with W-Shock when the tail comes down and the opts have two magic-based attacks, one of which hits the whole party.
The Opts can be hit with Insta-KO, Slow, Stop, Mini, and Paralysis. Stop+All has a decent chance of disabling some of them for a while, as does the Alexander summon. Mini may not be as useful as two of their attacks are magic-based but is worth considering if you have a spare two slots for Transform+All. Insta-KO can either be attempted using Odin or by having characters with Destruct/Odin + Added Effect in their weapon (or a weapon that has it innately, like Tifa's Kaiser Knuckle) with a roughly 20% chance of inflicting it per physical hit. If a character with Cover + Counter Attack had that on, or if a character is using Slash-All or has a weapon that targets all, then they'd be able to pick some of them off faster. The Remove spell can also do it 100%, but it's tough to unlock by this point. Kiss of Death items can also be used for a chance of inflicting insta-KO.
The main boss can be Paralysed for some relief (Cross Slash or Dazers), but can also be Silenced + Blinded. Ink or Ramuh can inflict Blind, and Silence can come from either the Silence spell, Leviathan, or an item. If that's done prior to the opts coming out then you'll have some more breathing space as he'll be missing you more often.