Sufficient. That's the perfect singular word I can use to summarize this game. It's just sufficient. It's not bad, it's not great, just fine.
The music is nowhere near as good as that of Mega Man X and not even Mega Man X2. Zero is a neat addition but he feels very unfun to play as, sadly. The levels don't feel too inspired, backtracking and the extra secrets were unintuitive, and the extra armors really didn't feel like a compelling addition at all. Just, sufficient.