Padme Geonosians

RNG. I beat it with G12 Geos and R3 Brood without a loss, but it's difficult to replicate.

Possibly mods too. Someone I know was struggling to have success in general with his geos, then he got a higher level player to help with changing his mods and he was able to start winning harder stuff with them.

I did it with a G12 Brood, G11 Poggle, and G10 for the other three.  Speed Secondary's are a must on all mods.  It is 100% total and complete RNG.  You have to line up Geo Spy to use insta kill on Padme as she buffs everyone and she will start a one shot chain.  Survivability on Sun Fac is crucial, mod health with defense on him.  Geo Spy is all Crit Chance and Crit Dmg.  Prior to relic delta, this is the video i watched - https://www.youtube.com/watch?v=Dcess_9W4AU

I just did the event again and you're facing all g12.  I did it and 3 of my toons aren't even 85, Sun Fac is 80, Geo Soldier is 78.  It's just timing and kill order.  Watch the video and see if it helps.  Good Luck

I believe what they list as their minimum requirements to participate in a battle are - only that: the ‘minimum requirements to participate.’

We are all accustomed to that meaning, ‘very hard, but doable’.

That’s not how these games work though. That minimum requirements being met really just means you can participate - not that a chance actually exists. This is a ‘standard operating procedure’ for how gaming companies operate now and even more so ‘how phone-app gaming companies operate when using the micro-purchase model’. It’s a constant tease. ‘You can do it [if you spend just a little more]!