I remember a long time ago, I played through this mission with a Warrior, and I remember struggling a lot with those portals. The enemy demon was very actively chasing me, or rather, chasing Shadia. I made a fatal mistake by leaving her without protection and exposing her on the surface. By some miracle, I managed not to fail the mission with Shadia and defeat Grol.
This time, I played through it with a Hero, and thanks to Shadia's dark magic and Railag's spell power, I was able to win battles against 450 dancing blades, 300 furies, 350 ghosts, and so on.
Overall, I completed the mission without any major problems. I defeated Grol on the second week; he attacked me, and I knocked him out.
P.S. I'm currently playing through the last mission with Railag, and I'm still relying on berserk, mind control, and spell power to survive.
Auto-translated
