A BOSS RUSH THAT CONSISTS OF EVERY SINGLE BOSS YOU'VE EVER FOUGHT IN A VIDEO GAME - Fourth Look

if you lose Yoshi in the Metal Man battle, it becomes impossible.
there is now a planning sheet:
music:
Metal Man (Megaman 2) - MM2 boss
Boom Boom (Super Mario Bros 3) - SMB3 boss
Wart (Super Mario Bros 2) - SMB2 Wart
Concrete Man (Megaman 9) - MM9 boss
Kamegoro Maker (Megaman 3) - MM3 Wily Stage boss

Look