I just fixed a couple of bugs and added a better volume option, so you don't have to suffer with the old one. Manuee's adventure will have bigger updates in the future, probably close the june, as I am busy with other projects specially the main one Gravity Storm.
The following is an old video with some gameplay if you haven't seen the game. Manuee's Adventure is a available on here, Newgrounds, itchio and gxgames.