i finished 18 on my third try. i followed the fenrir wherever he ran and eventually he will attack with either his dash or his claw attack which are both easy to parry, only problem were the tripods, they were really annoying.
19 was a nightmare for me though and cost me 4 hours straight. i lost 4 times when i was about to cut the last fenrir and missed the red box lol. then i watched the videos the thread creator made and this is the best way to fight fenrirs imo.
forward, forward Y with no unique weapon equipped and Blademode cancel to do it again, after the 7th time you can execute him. did this on the last 4 fenrirs and it worked pretty well (although i still messed up a few times but thats my fault).
Thanks to Gackt for this amazing sig!
BlazBlue Chrono Phantasma in Early 2014!