Incessant looping music that's pleasant enough, but will soon drive you to despair. There are about three different sounds for your jump, and the only one with any voiced lines, is Balan.
Not horrible, just perfectly fine. While this is largely glitch-free, it's also utterly uninspired and unremarkable. Some of the characters are just plain ugly, too.
A fairly wretched experience marred by an unsatisfying jump (which we've heard is quite important in a platforming game), some hit and miss costume abilities, and shoddy level design.
Hours and hours of doing basically the same thing repeatedly. The fundamentals simply aren't compelling enough to make you want to keep playing, and the enforced retreading of already completed levels is a headache.
A solid enough list with a decent spread, which unfortunately leans into hoovering up every collectible and completing every mini-game. If you want to put yourself through that, then all power to you.