stuck on the Castle Fight in Chapter 2 and can't advance to Chapter 3, any advice?
Upgrade your resolve and attack power to make fights easier. Also make sure to have some healing items from Tama.
Combat advice:
>try to use the chain type weapons to reduce the enemy's SP gauge
>hit the qtes as they do massive damage to the SP gauge (slow down the combat speed if you are missing the qtes)
>use both bleeding and poison orbs to reduce the opponent's health if you are struggling (also get antidotes and healing items)
>make sure that you have enough sp to do 4 moves + sword when you cause the opponent to collapse
>do the side quests and unlock the fish slayer item to make grinding a lot easier if you are still having issues.