Any tips fighting 10 crab for class emblem?

[Frederick White]

I'm struggled with RNG a lot, when those sb decided to do 4-5 aoe i'm ♥♥♥♥♥♥.

[Storm Reaver]

Build up the Overdrive before battle.

Then unleash Glenn's at the start.

[ninakoru]

I don't recall very well, but using Sienna + All Blind turn 1, build up with victor/mikah (offensive Up), all stats down with Glenn ultimate, can make the trick.

[Songbird]

This is rather difficult if done as early as possible. You will not have Mikah yet (she's an entire act later). If you can get Debuff Extender V or better on Glenn, it makes a very very big difference for survival. Turn 1 Blade Reflection, turn 2 Glenn ultra should definitely be part of your strategy. Actually dealing the damage to kill them is tricky; you can use AoE wet/dry and Lenne's third eye > jump, but that's not enough damage on its own. I actually pulled out Toxic Shot + Pandemic for this fight; it was like the only time in the entire game that Pandemic actually pulled its weight.