I have the same issues with the game, like Shifty said!!
It is sometimes a brutally difficult game!!
And if I would have not played the game online coop with my buddy, I would have discard the game about after 25% of the SP missions! Sometimes we tried the same scene about one million times (they could have at least give the gamer infinite amount of respawn!!!, After 3-5 deaths, you have to restart the whole start all over again - in regard of this, I think that this game is more suited to the hardcore crowd).
And the reason is the somehow exaggagerated physics, which makes precise jumping sometimes impossible (especially if you are coop-ing: the first who jumps has the "clean" situation, but the second one really needs luck!)
Did you manage to finish all SP missions (especially this wheel of death stuff)?
Yes, LBP is a hardcore platforming game. It can be punishing. Looks is deceiving here.
But kids can still love it. It's the #1 game for my 5 year old. #2 is SingStar. He plays the game by himself. He can beat levels I failed at.
I think the appeal is the cute characters and small user created levels. There are a lot of levels he could clear easily. Those encourage him. There are a handful that are madly difficult. Those he will attempt and sometimes give up.
I also see him wander into the Create mode to fool around. I am leaving it totally up to him to discover. No hints from Daddy. I have a feeling some day I will see a level from him.