Right first of the good stuff you are getting better at game making I can see an improvement over your other games and the idea of unlocking levels with money is quite clever.
Now for the constructive criticism. What is the shape of your collision boxes for your platforms because I keep falling off the platform when I should not whenever you import a sprite into C2 be sure to press the collision polygon button when it comes to platforms it is best to just use simple squares.
Also, you might want to look into using tiles being forced work with squares might help with your level design because platforms which were next to each other where slightly misaligned it is not a big deal, but it makes the game feel a little unpolished. also make sure the lava pools are behind the platforms otherwise it looks alittle odd. At the start of level 2 there is a turtle shell that falls out of the sky for no reason.
Now I know it must seem like I am being hard on this game it is just I think with a little polish this game could really stand out
Ok thanks I will try to figure out how to avoid that sinking that happens , fix the alignment and yes the lava pools I don't know how I missed that. Thanks for the feedback!!