I like the idea behind it. Seeing in the other world and collecting the right form of energy to progress. But I didn't figure out the second level, actually. I tried to progress through the veils, but couldn't. In the second run the character, who changed my energy to a blue kind of energy even fell down and died. And I was stuck even more.
So a more clear guide for the start would be great and a possibility to reload the current level, in case some got stuck like me.
I liked the art very much and the music/sounds. It all fit together, very well. Some of the edges were cut of at the bottom. But that is just a minor complain.
Hope you continue to work on it, because I see great potential in it. Want to play it further! Great job you two!