I put together a team similiar to a CC one I saw, but it only works like 50% of the time, if that.  Needs tweaked, but DID get me through hard 10.  i'm confident I can get it closer to 100% with some books and glyphs.

Razelvarg lead (and goes first) - 3 hits on his a1, 250 speed but he gets sped up by boss to go first.

Longbeard goes second - 270ish speed can be any ally attack champ, but he goes with everyone including Razelvarg and his multi hitting a1.

Fahrakin goes 3rd - second ally attack, can probably be anyone again, but with razel and the rest of the team he gets the sheild down on this attack.  Doesn't need accuracy or anything, just the proper speed.

Yakarl - goes after the first 3, hes important because he freezes the waves so you can make it through, AND he puts a decrease speed on the boss.  If his decrease speed fails to land after the shield is down, it's over.  He also reduces TM.  Accuracy and speed are the stats we need.

Gnut - goes after first 3, locked into a1 for the boss so he keeps reducing TM (sucks cause I really want to use that a3.)

Gnut and Yak are in the 260s i think.

Team uses 2 fusions, a shop frag champ, and then if you have 2 aly attack's you'll be fine.  I don't have card/valk so I was happy to see this pop up.

I gave a brief try at the team I put in the the topic, and it mostly worked. I do need to tweak it though, cause I didn't realise that Gnut's A1 doesn't work if the boss debuff bar is full :/

did you turn off fahrakins a1?  he'll load the boss up with debuffs.

You mean his A2, I assume. And yeah, turning it off helps. But I think I'm going to drop Valk in favour of a second fatman.

Okay. Got the FK10 team working. Haven't fully tested for reliability since Razel is still unbooked, but here's the stats (incuding FK10 live arena bonuses). IMPORTANT - make sure Yakarl is in position 4 and Gnut is in position 5.

Razel: 339 SPD, 273 ACC  - A3 opener + disabled on wave2 only, A2 disabled on wave1

Fatman1: 354 SPD, 335 ACC - A3 opener + disabled on wave2, A3 disabled on wave1, A2 disabled on boss and wave 1

Fatman2: 335 SPD, 192 ACC - A3 opener + disabled on wave2, A3 disabled on wave1, A2 disabled on boss and wave 1   

Yakarl: 299 SPD, 348 ACC - A3 opener + disabled on wave 1, A3 opener on wave 2, A2 disabled on wave 2, A2 opener on boss

Gnut: 311 SPD, 382 ACC - A2 and A3 disabled on boss and wave 1

^^ Those are pretty impressive speeds and accuracy. How long do runs take? I imagine with that speed you don't have much crit and crit damage?

Still running fk 7 as don't have decent times for any higher

About 8 min average, but seems consistent. Updated with new ai settings. Also critical is phantom touch on as many people as possible. Shield needs to be brought down as gnut is doing his second ally attack hits, or tm won't be reduced enough.

That's decent! My problem is that while I could hit those speeds and accuracy I wouldn't be able to get crit rate and crit damage on too... I just don't have the gear.  I use razelvarg and gnut in other content and don't want to ruin them for that.

Plus I question whether running fk is even worth it at times. I used 1500 energy today and didn't keep a single piece 

1500 energy farming oils would have been a much better investment 

Oh my damage stats on all of them are pitiful. I'll post some screenshots later, but they're all around 30-40% CR and like 3500 atk. Basically just tangential stats from items. Ironically though, that actually helps, because the more you can cycle razel a3 before reaching the boss, the faster he'll be.

those are some crazy speeds lol.  and yea, i also found that gnut needs to go last to get his hit on the FK after the shield drops in the ally attack.  i still need more speed on mine, thinking i might have to actually do live arena.

in the meantime, the team is almost 100% on fk6.

Okay a few tweaks - updated my earlier post to reflect the changes. The original team wasn't quite consistent, with the changes so far I've 6/6 on autobattles, going to let it run to see if anything changes.

Thanks for linking me to this!

I am using marichka, valk, gnut, gnut  for fk and lately been experimenting with arbiter for the fifth champ to keep it 100 percent

It works up to 8 before it gets painfully slow

Speeds are less impressive than yours. Arbiter is 377 but the rest of the champs are around 275.  When you want to do 400 or 500 runs do you set a pc running them or something? It's too long to tie my phone up for me.

WG

I mean tbh I am not in that situation ever. I just don't play the game enough anymore. The only time I do dungeons at all is during fusion. And at that point I just turn super raids on and autobattle during work.

^^^ to be fair i use forge gear the majority of the time nowadays so that is a good point.