Love this game!
Playing on PinePhone Pro (I use Arch, btw) with Backbone One.
Using RetroAchievements with hardcode mode enabled (i.e. no save states). It's sad that it's impossible to share profile.
The last part of the level before the last boss is harder the the boss itself. Spent more lives at this part than in the entire game :)
I played this again many years ago on Xbox when the Disney Afternoon Collection came out, along with Rescue Rangers 2, DuckTales 1 & 2, and Darkwing Duck.
The music for these fans was really great, owing to Capcom. DuckTales is basically an unofficial mini Mega Man soundtrack at times (Moon Stage, Transylvania Stage, Mine Stage). Many of the themes from Darkwing Duck also sound like they come from Mega Man 3 specifically, like the ending theme (very bluesy).