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So, new weapons.
Flying Dragon should probably go in A or A+. Pretty similar to Solar Eruption, but exchanges power and secondary effects for a bit more range, being slightly easier to aim, and slightly earlier availability.
Aerial Bane and Betsy's Wrath feel at home in A or A-. Not as much...
Nominating Toxic Flask and Nail Gun for B-. They both have pretty good damage, but Toxic Flask is only good at a very short range & against slower moving enemies, and Nail Gun is a bit too slow because of the delay on its nails exploding and is mostly outclassed by other ranged weapons on the...