Also finished it. Some levels are a bit harder, but not too hard in my eyes. Especially the final level could have been a bit harder. Though like most of the Mario games, this is a good one
I've grown up playing platforming games, so I found this to be very easy, although it was tough at a few points. One problem was how the game made you slide quite a bit, and it causes you to hesitate on the one tile platforms. The other issue was how at times you had to jump off a high spot and you couldn't tell if you'd land on a platform or not. Other than that, it was a good game.
Very well graphic game, and is fun. But the lack of lives is annoying, once you touch a monster you die, and have to start the whole level again. The movement is rather sensitive and makes it slippery. The camera movement with the character is very fast and it could cause headaches, but other than that fun.
(Short/useless comments don't award GIPS)