I found that the best way to do the boss fight is to stand all the way at the front of the boat. as long as you stand at front center, he will always come up in the front, and you will have time to fire the cannon before he swings at you. Didn't get hurt once during the fight
I found that the best way to do the boss fight is to stand all the way at the front of the boat. as long as you stand at front center, he will always come up in the front, and you will have time to fire the cannon before he swings at you. Didn't get hurt once during the fight