Why did everyone have so much trouble with him

Hmm. That was actually a boss I had little trouble with. The second time fighting him that is. Died right before my I killed him the first try. I figured kill it's spider minions on the first phase. Leave one alive. (Didn't want to find out if he spawns more for killin all the ones he had out) then attack him Til he teleports. Second set hit and run. Kill a few spiders when he nova blasted. Repeat Til dead. Just with a little extra care on third phase just cuz he thrashes a bit more when you get close. It's spider minions are the only thing that made it a bit of a challenge. If you tried dodging them to attack him.

I had to bring help with fighting Rom. Bastard liked to spam his blue crystal attack thing on me.