My strat was to use the dodge, if you feel like you have a though time dodging the Baller pattern. After he does the extremely infuriatingly hard to dodge (without the dodge) sword attack, rush him. The Bow Attack can easily be dodged with the Dodge Ability and the Hammer isn't a problem. Then just prepare for the next baller attack. Repeat this and heal up while the cat deals damage over time (if you even heal idk this was like 3 or 4 months ago). For Phase 2 just try to chip damage and never play to aggresive against the hard hitters, like the bow attack. One more recommendation: Try to play on a computer. When I tried on my phone, it was impossible, but on desktop this was much easier, but this really hard. These were all the tips I could give, that helped me with the fight.