Megaman 3 has a stark difficulty curve from 2. Way less consumables drop from enemies and levels are generally harder, as well as some of the bosses being more difficult. Which isn't bad, but some of the difficulty felt kinda chees-y. Ironically, Wily's castle and final boss fight in this game is the easiest one so far. Sliding and Rush the Dog were 2 amazing additions to this game that made it feel sooooo much better than 2. Although I still like 2 way more. The introduction of proto-man and the reveal who he is later was also an amazing part of this game.