Any advice for DM Chimera?

It's such a dumb boss imo. It throws so much bullshit that bounces around the screen, can summon other things to attack you, covers the arena in damaging things so often that it's impossible to avoid any of it.

The amount of runs that end at Chimera because it has just an immense amount of crap on the screen is staggering. It's basically you either kill it in 2 seconds or lose almost all your health or your reassembly and have to restart, like I genuinely hate this shit more than the Leiana Sisters. Both of which I put above the last 3 bosses in terms of difficulty and "bullshit" which is saying a lot.