Baaad.
Oh boy...
Let me list some things:
1. Add an instructions page. Or at least something before you start playing.
2. I start and I'm losing health and I'm like 'Wtf??'
3. The detail on the hand is atrocious and the badly drawn/placed nail makes it even worse.
4. Make the UFOs stand out more.
5. Give the UFO's more of a delay to when they start firing, giving the player somewhat of a chance.
6. There's a delay from the time you fire and the sound of it firing.
7. Make the UFO's attack stand out more.
8. THERE'S NO RETRY BUTTON!! You just kinda sit there and fire into oblivion once you lose.