Good looks and nice feel to the controls. Maybe a little hard to control the dash. I couldn't find the X stardust. :(
A thing I would have like, although you did state there was no time for level design, is having some hint on whether there are spikes below or not. Often I had to take a complete leap of faith and jump down a hole :)
Great work with the protagonist, he feels awesome, and looks nice with the tail that reacts to velocity and stuff.
Hope you find more time for level design and completing the game next time! Keep it up!