A big disappointment. Everything that made special the first entry of the mega Man franchise in the game boy was now discarded in order to prioritize making a more NES resembling stage. The screen doesn't helps sometimes, most gimmicks are broken due to the rush abilities, and the soundtrack is not pleasant to listen.
Fortunately: there's fixes. The boss rush was made in a far more interesting way by virtue of making the stages playable on a second half run, without sharing a stage with the final boss (why did this happen before lmao) and the bosses no longer destroy your life energy in three attacks.
Sadly, that's not enough to make this a pleasant experience, is far weaker than its predecessor and way less charming.
Also Mega Man killing Wily in the ending is funny