Very polished and cute :) Maybe you can add some way to reward the player for hitting the letters in right order (I actually thought it would work this way before playing), so you'd have to snipe the right letters and change bullet types to switch between different words. Anyway, it was a great experience overall!
Also, looks like you've added some kind of smoothing to the mouse (to make stuff harder to hit I guess), but it gets kinda annoying at times.