Finally managed 241 stars, and I don't think I'm gonna go for that final challenge (for the sake of my sanity)... honestly, I can't say I was much of a fan of this game as NSMBWii or even Galaxy 1. Don't get me wrong, I liked it... and yes, I prefer 2D platformers to 3D platformers, but here are some of my problems with the game:
-Green Star hunt - the lack of depth perception when projecting a 3D game onto a 2D screen made it hard to tell where on the XYZ axis some of the green stars were (especially the ones floating out in space). I frequently jumped to my death when I thought the star was within my grasp due to this.
-Rock Mario/Chili Pepper Yoshi - tight controls are extremely important in a Mario game, but with these powerups, I felt more like I was playing a 3D Sonic than a Mario. They seem to take away accurate controls and are extremely sensitive to control. Luckily, they weren't used
-Fluzzard - wasn't the biggest complaint from the first game the waggle stages? Well why did they bring these back?
-That damn fat purple Luma who keeps telling me I should take a break for a while, when I die.
Overall, the game looks awesome and it still has that same level of imagination in many of the level designs as the first game (even if the whole concept does at times feel like an expansion pack). Some parts (namely, the speedrun comets) are extremely challenging and require you to exploit your environment to the fullest. Also the levels are concise and don't take a while, which is nice.