Amazing First Game
I felt as if I were playing a cross between Super Mario and Pac-Man Adventures and this was an absolutely fantastic first try. The most important thing is that you were able to create an enjoyable atmosphere, something which few flash artists are able to do. Your use of the mouse was very innovative and made this game really stand out.
The next step for you is to work on the clipping and fundamental issues related to the terrain. For example, walking up and down slopes was a little choppy/glitching because I suspect that you made them as stairs and drew over them. Another minor issue was the size of the bubbles and fonts for signs which often went off screen. Also, I personally loved the music but it is always a good idea to give volume and music controls.
If you focus on polishing up those aspects, adding some more direction and challenges, this will be a great game. Keep up the good work!