Loved it. It's a very good blend of traditional 2D megaman with RPG style elements. In terms of difficulty, it was just right. punishing some times, but nothing "Nintendo hard". More bosses and Chips would have been nice. Definitely recommended!
There's a bit more up and down, certainly, but all that really distinguishes it is the sharp, cartoony look, smooth framerate (even if we couldn't find a 60Hz option) and web-like interface for loading each level.