This game is a real pain in the ass :P. I spent at least 40 minutes for each level. Unfortunately, I didn't beat the game, I gave up at the 3rd level.
I like this platform, the game design is great. Each level art background are beautiful. I like how you paid attention on changing the music for each level and they sound very good too. Cool sfx as much for the characters, the movements, the jump,etc. I like that little cutscene where you're introduce the story in french, for someone like me who is a native french speaker as well, I personally think a translation is not that much needed for the game, except for those who are curious that the main character name is ''Joey, he's 10 years old and he returns home from school by bus. He fall asleep and he wakes up by noticing that there's nobody in the bus so
he must return home on his own..... and that's pretty much about it :P. ''
As far for the control and game programming, my opinion is a little bit the same as StatKing, there's that part in that 2nd level http://imgur.com/04ARGkz when the enemies are between the main character, the character itself begins to lag and does not respond to the command that we press sometimes. In the 3rd level, there is a problem with the answer between the keys jump and left or right arrows, your character get stuck into a invisible floor and does those weird lag movements. Here's an example: http://imgur.com/yLn39w7 .
Otherwise, cool platform but you need to fix the problems of adjustments to the controls by making them a little smoother and also fix the lag in the game would be amazing. Nice work ;)