Okay, I downloaded and played it a couple of days ago... here are my impressions:
* Game design is pretty solid. A nice quick action game... purty gfx
* Reloading is little more than a frustration. In arcade games (with the gun), reloading is done by shooting anywhere off screen. In ducklets, it's bothersome and frustrating to try and tap that little section, and I really don't even NOTICE the spot all the time. Just a note.. I don't like the reload system myself.
* Powerups are either too plentiful or too powerful
* It would be nice to have some sort of a way to build up chains... so when you click enough in a row fast enough, you get a higher score, bigger explosion (which can detonate those nearby it) or something.. I think that would add to the frenzy of the game.
* Upon exiting I got some sort of "Exception Error" on my Viewsonic PPC
I think it'll be a pretty fun game when it's done though

Hope my suggestions aren't too negative...