Need help for conquerer node

Ok, you will need a Cú Alter (or Jeanne Alter for 2x dmg to Ruler) (for DMG cause you are under lvled) with MLB Princess CE, set up a team with your Cú and Cú Alter + Herc (Herc should hold Imagine Around for NP, or Jolt Recital if you want Petal), backline should be Mash (for CE holding and NP charge), aiming to build up Main Damage Dealer to 100% before the 3rd wave. At the 3rd wave, pop up all dmg buff on your servant (and command code) and nuke Dantes (he should be dead) and AT LEAST 1 of command card of main dmg dealer on Amakusa (if you choose Jeanne then you can clear this easier, but you will need to survive untill 3rd wave).
That's my thought, you can try several options, including Cú Alter Solo Support and (Leo + Georgios)

Hello, I did beat the node (just barely) with Arash (starting CE), Waver, Georgius, Herc (White Rose CE), Mash and support Jalter MLB White Rose

Waver filled Arash NP bar, and he finished of the Chimeras on the first wave, clean and safe. Herc cames in frontline right after, and on the second wave Georgius was protecting Herc with taunt + gutts + Waver def up, as he finished first Avenger Jeanne, with Valor, as vanilla Jeanne NP is harmless and has low attack.

Last wave Herc did fell, alonside Mash, support Jalter burned Dantes with comand spell...

Sent you a friend request. My support servants should help you out.

I am clearing it with Raikou + Hans + random support + Ozy + Iskandar + Mash (never comes out unless I am truly unlucky) with Chaldea uniform (evade, heal, buffs).

It's much easier with support Waver because he cuts Chimeras' damage to nothing, decent with support Ozy, but someone decided to make it challenging and put the MLB CE on Shakespeare. That is not fun!

An AoE berserker like Raikou ignores rulers and avengers.

It's been a rough road for me as well since my main servant for just about everything is Martha Ruler and there's TWO avengers to deal with. I'm running her with Summer Kiyo and a friend Jalter. The strat is mostly Buster brawling while stacking buffs from Jalter and Shakespear on my back line with the combat uniform.