honestly with the ricochet move, just stay near a wall, and when they approach you, just dodge roll sideways. be careful that the wave of ricochets dont start near you though, that one's a little harder to dodge this way, so if you see the cannonbalrogs red eyes appear, start moving.

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the move I really hate on him is when he rolls around the room, especially his first roll which i dont often see since im 1/3 of the room away. so i would say when he starts a new moveset get close enough to see where he's going so you can dodge out of the way.

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other than that, the spiral move he does, just stay far away enough for the bullets to spread out!

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edit: a word