This was a lot of fun to learn. Could still work on the 2 cycle first boss but I'm happy with this at the moment.

Everdrive N8 used with NES frontloader

[Mode Note: Re-timed from 3:26 to 3:26.617. There was no reset or power cycle at the beginning but it's not in the rules so no big deal. I'm adding that rule to apply effective immediately so just show a reset/power cycle if you ever come back for more!]

[Mod Note 2: Under the new rules laid out in the thread from 10/22/23, this has been re-timed to still be 3:26 but have the milliseconds removed.]