Just beat it today, guessing I've spent 7-9 hours on this challenge alone. I've gotten close to finish it a few times, was on the last Bogey but then he'd catch me with one of those big purple beam shots, knocking me into auto-ARS & as I didn't have enough, he'd get me with a regular shot. Either that or the massive chasm-cutting laser blast they do.
Regardless it's over & I never want to do it again. I actually should've played the lottery but stores are closed now & there's always tomorrow.