It's due to "Combat Deja vu- (Prowess Buff)". It gives Mr. Negative a prowess buff whenever you do the same basic attack twice in a row. Then you probably have one of the pre-fights that nullifies buffs, which Mr. Negative is immune to, and whenever he is immune to that, he deals a burst of damage to you.
Try to play it slow and you'll get through it. Medium-Light-Medium. Heavy. Medium-Light-Medium. Heavy. Special 1. Medium-Light-Medium. Etc. Just don't repeat the same attack twice in a row and you'll hopefully get through it.
yah. Light nullify is the issue. Wish could have known with full health
Got past that, 150 units later ye
Got galan with with those titan shards
what a joke . No matter what I did my health just got slurped down from the start and dude only had 5% health left too. Eff this and eff kabam you shady shisters. Go get taped - t + R. Go get taped by a pack of wild silverback gorillas until you need out everywhere from the forcible hendry you shady whews. You deserve worse than that x 10000000 I ate you and all you are.