I was beating Megaman III IV V and X X2 in the early to mid 90s when I was still a young kid.
Never understood how some people thought the Megaman games were difficult. Even today, Megaman I and II are not very difficult at all to me.
I guess I prefer hardcore platformers like Super Meat Boy and the I wanna be the guy/fangame games for hard platformers.
Congrats on beating a boss that took you a long time though ^^