I had a lot of fun even though the game is WAY to hard for me :D It looks great, however adding some contrast to dangerous areas would help a lot.
I couldn't even get past first level :) I played all the way through with inifinite lives and would love to play it legit instead, but the difficulty was too steep. Maybe if the shield would trigger automaticaly to give an extra life? Otherwise 1 shot death felt unfair against enemies that take so many shots.
But I enjoyed it and would love to see it worked on. There's a lot of potential here.