Pop Jump

Well, as you have already mentioned it's a difficult platformer game, there's no point to tell it again. However, one thing you should consider adding is the air control movement or else make sure the level design starts slowly and progress gradually towards difficulty. This is because, for some reason, it seems like this is not the right way to reach the top and it looks like not possible, but if you keep easy starting and then bump up the difficulty, it will make more sense.