When you're running from the ice shards, either be running directly away from
, or directly toward him. Anything else usually results in one of them hitting you.
I didn't like this fight. It feels like you need luck on your side (the spiders giving a good opening). Other than that, I avoided spiders, went in with bolt paper and ripped 2-3 R1 attacks then just ran in the opposite direction, then toward him again. Wash rinse repeat. I used all health doing this fight, i think, so even with the strat it's still not easy.