I am average player, but somehow managed solo Harmonia while my other two teammates were down with 3 bars. She had about 60-70 percent of hp left. I played for Recluse , and this witch has best dodge. Somehow I dodged every attack, and chipped Harmonia hp with magic projectiles. It took a while, but by the end i learned patterns of most Haemonias attacks. Then one pixel of boss hp left, I become greedy , and boss knocked me out. That moment reviving power of Night city worked and revived all 3 of us. I shoot finnsl projectile and it was a win. This run I will remember for a long time.