Megaman: The Power Battle is one of the coolest, rarest MM games. It's the only MM arcade game ever! Basically, you can choose either Megaman, Protoman, or Bass. Then you chose to fight the robot masters from Megaman 1-2, 3-6, or 7. This is a great game, and I think every Megaman fan should play it! So I present my guide, to give you all the important info, without taking away the challenge.
It's not finished, and it probably won't be for a while, but I'll try to add more every now and then.