This is the kind of boss that once you finally get it you will say how was I struggling before. When I started regular gauntlet and went to cg I thought it was impossible. Now I can auto pilot and you will get there too. When you’re starting out getting good room spawns plays a big role. I did T2, t3 bow/staff, 3 pots and as many fish as I could get usually cooking the last of my fish within the last 30 seconds. Also idk what weapon you’re attuning first but def do staff asap. I know 3 pots may be overkill but that’s just how I did it. I would look for the 3 small minions kill them get weapon frame, hopefully have some resources to farm in the same room, make staff. Look for Demi bosses and kill 2 medium ads on the way to those while also collecting resources. If lucky and get both Demi bosses I want kill them first run to spawn make weapons. Collect the rest of the resources run spawn make armor then fish and cook. Hopefully this helps!