Awesome guide as usual mate. Finished this in just over 3 hours. Really easy and an awesome kids game... if it weren't for that freeze at the end of levels. I only ever hit it on the boss stages and I found that the game checking for an achievement is causing the hang. So, if it hangs after you kill a boss and you got your "no dying" achievement, make sure you die on the boss fight. Every time I did this, I got past the level straight away. I think this is more than coincidence so may be worth noting. I also played from HD on a slim and saved to a USB stick but still hit the problems.