This boss took me the longest out of any boss so far. Not because he was the most difficult, but because he was the most difficult to learn. Bask in my unconventional dodging methods for this boss in this 115 second fight.
Video since I suck at describing techniques verbally.
Controller inputs: Hold Dash, Jump, release Jump, Shoot, hold Jump, Down, Down just as you are hitting the ground, immediately hold Right. It's very important that you press your first Down command AFTER shoot, and not at the same time.
35min after his initial defeat (and 5 more kills later), I figure out what to do after. I definitely don't break any speed records doing this (64 second death, 124 second victory), so I might go back later on and try to beat it quicker.
70 second fight. Could have been sub 1 min if I didn't get a 2 rounder. Took about 2 hours altogether to figure out how to put him into a pattern (HE DOES HAVE ONE!), and 3 hours 20 min to beat him exactly. Title is because he dies just as his emerald attack is going off. If I had damaged him more during his first "dash" attack, the poor guy wouldn't have even made it to the emerald attack. Reason there wasn't a nerdgasm like the VVV maze is because my girlfriend Cassie was sleeping behind me.
This took literally forever. The journey working through this "together" (Kinsume was pretty much just there for lulz) is pretty entertaining as well.
WARNING: NERDGASM UPON COMPLETION! No seriously I was so happy/relieved, you don't even know.