Okay, Raymanni. I finally find the time to complete your fan game at 100% (with 186 cages and every collectibles)
Now, it's time to post my opinion:
Story and characters
+ Pretty good story. It is as good as the R1/R2/R3 one, and better than the RO/RL ones.
+ A lot of new enemies.
+ Some familiar faces (the Musician, the Hunters...).
+ Some characters have a new look (Betilla's clothes, the Livingstones in vacation, the Hunters who shoot red bullets...).
Worlds and levels
+ A lot of levels to discover.
+ Original environments (Technological Towers, Secret Lab, Almost Space...).
+ R2-like environments (Tropical Isle, Brutal Burial Ground...).
+ Kind of RPG quests in the hubs.
- When you want to go back to a previous hub, you must cross the other ones. Too bad. I suppose you couldn't create a world map. You could create a main hub with a quick access to each hub.
- The game often slows down in the hubs.
Gameplay
+ Controls personalization.
+ No loading screen.
+ Numerous and useful save spots in the hubs.
+ When you know R1, the game is easy to pick up and play.
+ New and original powers.
- As GOT4N said, you can't grab ledge and the fist is taking way too long to charge.
Difficulty
+ It's as difficult as R1. Perfect.
+ The last worlds have the difficulty of REAL last worlds.
+ Like in R1, you can access to the last level only if you have freed every Electoons.
- I think the difficulty isn't balanced. Between two easy or medium levels, you can cross a pretty hard one.
Boss fights
+ There are some good bosses (Pascal, the Reaper...).
+ The two last bosses are epic, and "run and gun"-like.
+/- You have the possibility to pass the boss fights during backtracking. Too bad it doesn't work in the level Freeing the Magician.
- "Brutish play style" and damage boosting can help you to beat some bosses. And you don't want to lose life points in this game.
Music
+ Nothing to say. It's excellent.
Shops
+ The coin system is a good and original idea.
+ The cage and item detectors are very useful for backtracking.
+ Nice minigames. It reminds me
Rayman Collector. Useful to farm Tings.
+ Rigatoni's Circus was pretty good. It took me time to find the exit.
+ Nice bonus characters. I love their animations.
- 50 coins for a life?!
Other
+ The first level, Special Prison, is perfect to farm lives. And you NEED lives to complete some levels.
To conclude, this fan game was excellent

I passed weeks on it.
If you still want to play it, go ahead. It's worthwhile.