Do battle stats remain when you die & retry? And do they carry on to the NG+? Just thinking about that "cancel 100 enemy arts" trophy. There's this good boss fight during which you can do tons of arts cancels but I only have, like, 18 cancels so far... Just wondering if I need to do my hardest to keep myself alive or if I can just die & retry if things get a bit tough or if the boss is near dying and I haven't gotten the trophy yet. Or if I can just say fuck it and try to do a bit better of a job canceling arts during my NG+ run with my 18+ cancels already counted for.
What about that 1000 battles won trophy? Does it have to happen during a single playthrough?
Yeah, they carry over in NG+ if you choose to do so. You basically get 5 points each time you go NG+ and can decide what carries over. If the boss you're talking about is the Chapter 6 boss you can just wait to do it in NG+ because you can "farm" cancels, rushes and bursts on him because its got so much armor physical attacks don't really hurt it.
As far as if stats carry over when you retry, I'm not entirely sure.