I shouldn't have to say much, do I? When I was doing the collector, I've decided to observe what the collector does. Then my guildmates said that on his second phase, he attacks non stop. That boss is in T1 and attacking it doesn't do much damage.
The collector is insane if it's going to be a T1 boss. Sure, players have a spark of life and emergency life, but it looks very hard as a Tier 1 boss. I say nerf it. How?
On the second phase, don't make the collector run to you nonstop. That is all.
I didn't even know he had a second phase. Dodged his first blast, defense went down, rocket
hammered him, killed him in one combo. Way easier than any other bosses. If you can't get
your hands on a rocket hammer, 3-5* brandishes probably work pretty well. Although I guess
He would be a problem for newer players.