Honestly I'd have to try to die on it. He swings with his sword almost killing you, allows you to regen, spawns 4 thrawl which were wiped out in 2 seconds then rinse and repeat til he was out Edit: so he's actually a challenge at the 240 light apparently. When I did it it simply said impossible so i didnt even think to try it. I'll give it a shot at around 220 light or so in a day or two and face the REAL final boss