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.
YMMV: Rayman 2
Anti-Climax Boss: Axel the first guardian. You just have to shot on the hanging icicle causing it to fall on to his head, defeating him in a single hit.
Even Better Sequel: The original Rayman was already a great game to begin with, but Rayman 2 successfully brought the series into the third dimension, with stronger story and characterization, making the gameplay much more accessible to players with its more lax difficulty and faster pacing, as well as much more adventurous with its wide open, dynamic level layouts, thrilling combat and boss battles, and unique gimmicks such as the walking shells you ride on, and the flying powder kegs.
Magnum Opus: To this day, quite a few consider Rayman 2 to be the best in the series.
Missing Secret: In some versions, the counter showing how much of the game you've completed stops at 99%. Even if you've found everything in the game. This troper spent countless days trying to find the last 1%.
Polished Port: The Sega Dreamcast version, which took the Nintendo 64/PC versions, updated the graphics, added some new features, and tweaked some existing features to work better. This version was so well-recieved, that the Nintendo 3DS version is actually based on this particular iteration.
Porting Disaster: While not as bad as most examples of this trope, the PS1 version is by and large the least polished of the bunch. In comparison to other versions of the game, the graphics are noticeably degraded, the levels are shorter and watered down, there are a few notable bugs (the most infamous of which is the fact that Blue Lums don't respawn, making underwater sections unnecessarily difficult) and the game overall has less content than its counterparts. At the time it was released it did have the upside of having CD-quality audio, but future ports also had it and kept the content from the original, so once the Dreamcast port came out there was literally no reason to purchase this version unless one had no other alternatives. It's even more glaring when you note that it was released on far superior hardware than the original! note It was also the first version to have full voice acting, but the voices tended to be so bad that most people preferred the simlish
The DS version also qualifies with its' framerate issues, muddled graphics, and two equally unreliable control schemes.
So Cool It's Awesome: Theres a reason Ubi Soft ports this game so frequently—it is not only a very polished, enjoyable linear platformer, it logically transfers the series gameplay style and tone into the third dimension without rehashing the original game. And the games overall presentation still holds up well to this day.
That One Level: Beneath The Sanctuary of Rock and Lava, period. Your flying has to be timed perfectly for some parts.