Mega Man 11 isn't perfect. It isn't a severely flawed game, but some of its flaws can really stand out. For the most part the level design is really good. There are many moments that encourage players to use the double gear system and the levels are lengthy enough that they can keep you busy. The difficulty of some levels, however, is definitely going to get to some players. For the most part any screw ups are your own, but there's a lot of trial and error in learning some of the levels, and even worse is that Mega Man 11 has a limited life count. If you get a game over it's back to the beginning of a level for you. The levels put up a great challenge, but their length and (in some levels) hazards can make starting the entire thing over again feel like a test in frustration. Even Mega Man veterans will have to slow down and really take time to learn these levels.
Mega Man does have some notable flaws, however: While Mega Man has a good amount of attacks with good knockback, the majority of his kill moves are considered situational, difficult to set up, or and/or are easy to punish. As such, he has a more difficult time killing than other characters and it requires good reads to successfully finish off opponents. Characters that have a move that either reflects projectiles or can nullify them (such as Fox or Lady Palutena) can also prove to be an annoyance for him due to his over-reliance on projectiles to combo opponents and bait reactions and it can render his Forward Smash (one of his better kill moves) unreliable, though this can be worked around by firing the Mega Buster twice at a time, and most reflectors are punishable if baited and he can still grab them. Although Mega Man can effectively zone opponents at medium ranges with the Mega Buster, most of his other moves are fairly laggy or gimmicky and his only reliable tool in close range is his grab, and as such faster characters (such as Greninja or Captain Falcon) can bypass his zoning more easily and put work on him in closer ranges and due to his above average weight and falling speed, Mega Man is somewhat easy for these characters to combo once they get in, assuming that they have any combo potential.
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