Advanced through the game until the two air current sections outside, where I got filtered.
I had fun going though the game, but it really need a revision on the controls. They feel very stiff. My criticism are similar to the other posters.
About the part where I got stuck, how is it completed? The space between the last current and the collectable platform is huge.
Considering this being the first game you published for others to play, fantastic job! The music plus the textures gives this game an odd feel to it. In your game page you mention you won't be continuing with this project, so I hope you good luck with your next one.