These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
It's Easy, so It Sucks: A major point of criticism by many longtime Classic series fans. Keep in mind, though, it's only easy by Mega Manstandards — and there are still a few specific bits that'll make you tear your hair out.
Memetic Molester: Clown Man likes to use his long hands to grab Mega Man from below... Yikes. And then there's his death quote...
Porting Disaster: The Anniversary Collection port, particularly the GameCube version, has numerous issues with sound emulation, such as skipping through parts of music tracks, and bosses voices inexplicably speeding up. Not to mention there were bouts of slowdown that were certainly not in the original game. Not only that, but it was also a port of the PlayStation version, which lacked Cut Man and Wood Man, and did not feature the extra galleries the Saturn version added. The Xbox version of Anniversary Collection is also quite blurry compared to the original game. Also the PS2 version has input lag EXTREMELY NOTICEABLE in Frost Man's stage and the beginning of Wily Tower 1.
The Scrappy: Aqua Man tends to be hated, particularly due to his personality.
So Bad, It's Good: The voice acting. Gets even funnier when you realize that Roll sounds manlier than Mega Man himself! Dr. Light seems to have some issues with his accent.