The beginning part, not so much, then you start re-fighting the Robot Masters, starting with Cutman.
If you can keep your distance, he shouldn't be too hard.
After him, it's Elecman. Just use the same pattern you used before to beat him. Cutman's "Rolling Cutter" is his weakness.
Then you have the awesome boss
Boss: Clone
Weakness: Buster Gun/Default Weapon
Pattern: He can use any form that you use against him (aka you use Cutman, he uses Cutman). Just keep your distance, jump, shoot, what-have-you until he is defeated. Try to keep him on the other side of the room.
There are 42,236 views in 10 videos for Mega Man. Mega Man has approximately 1 hour of watchable video on his channel, less than 0.15% of the total video content that IndieGamerRetro has uploaded to YouTube.