Honestly, it's not that good singleplayer, but I played through all the levels in multiplayer and had a good time. The multiplayer is absurdly unbalanced and chaotic, which just made it all the more fun for me. I found the level design to rely too heavily on summoning Tails to fly you around, which slows the gameplay down a little too much for my taste. I also found the music to be enjoyable enough, with some tracks that I liked, it definitely better than episode 1's, but not one of the best Sonic soundtracks out there. I didn't care for the special stages that much and only ended up getting 5 chaos emeralds because I just couldn't be bothered to play anymore of them. But overall, this is at least a fun co-op game, just not very fun singleplayer, I'd only recommend it if you have a friend who you can convince to play with you.