Just got it today and I've been having a blast with this game! The gameplay is solid. Bosses and mini-bosses are challenging, but so far even when an opponent seems impossible at first, a few lives later I've found a pattern and just need a few more tries to refine it. If a platforming cross between Sonic and a beat-em-up sounds good to you, give this game a try! However, there are two flaws to keep this from being a five-star game (but I'd rate it 4.5 or 4.75 if I could): 1. No in-game manual means you may be ignorant of your moves early on if you just jump in and don't read the readme, but even then characters are pretty easy to figure out. 2. The dialogue in the Adventure mode cutscenes can be a bit inane sometimes, especially before things Get Serious. Other than that the voice acting is surprisingly good! The story isn't anything revolutionary, but you're here for the gameplay, this is a platformer not an RPG. The cutscenes can drag on sometimes, but if you close the game and reload your save you can skip them -- or just play in Classic mode. Get this game for sweet platforming action, and it won't disappoint!
