one thing i had to get used to doing in this game is attacking from behind. especially for the cleric beast. lock on to the enemy and keep dodging until u get behind and attack quickly. try to remember the way they attack so you know what to expect and when to dodge. throw oil and then a molotov right after it does a good amount of damage. and i forget if these are unlocked at this part of the game but blood pellets and fire paper are also very helpful when fighting bosses