Definitely the weakest perfect score I've ever given, but god damn it go play it yourself and tell me it doesn't deserve it. It feels like the perfect fusion of classic Mega Man and the later X games. Almost all of the boss levels are incredibly fun, with some of the catchiest music a game has ever had. The levels are dynamic, and the whole game feels more connected on a deeper level than some games do now 30 years later. The only blemish I could possibly think of is the fact that a few of the Sigma stages are a little unbalanced, but other than that it's about as close to perfection as most platformers can get. I finished it in a day because I just couldn't get myself to stop playing it.