Ahh~ Yeah it's the first and only fight that really wants you to make quick decisions, move around and juggle aggro.
Pasha can pretty reliably take out the regular wave slimes with a few points into her bleed skill, and blue girl can help her out by shielding her (Lustrous Guard), //or// body-blocking stuff and healing a bit back with (Tidefeeder).
Forcing fights near to the campfire is generally good if you wanna be a little cheesy... as you can hide behind it, do an attack->dart away.
BUTyeah, it can be punishing depending on where stuff spawns and if you picked up the right skills.... I'm already re-tuning it to make it a bit less overwhelming