Blaster Master Zero 3: EIR (No Sub-Weapons or Cross Wave)

Kanna, of all bosses, is easily the hardest boss in this challenge thus far; the only ones that might top her in difficulty are the last two bosses. It takes a while to learn her pattern, and that's entirely because of all the shit that's flying around the screen. And thanks to the total lack of sub-weapons, it's honestly unreasonable to destroy any of the fruits or watermelon bombs instead of focusing down Kanna. She's just a VERY frustrating boss all-around, and I'm glad I finally managed to beat her.