Those 2 spots where the only instants in the game that showed a bit of difficulty. That quick man level was easy(use flash) and heat man(use item 2(as mentioned)). You can say 'buts its hard if you don't use it!!!!', but that isn't the game being hard...thats you making it hard. Thats like trying to beat the game without using a special power unless forced to. The powers are there to make it easy and its made for you to use them to make said parts easier. If you don't do these things then you made it hard on yourself.

All the bosses were unbelievablely easy to destroy. The only challenge is not to die on that one boss at the end of the game and beat him using mad skill left and right so you use the crash power juuuuuuuuuust right