Good job guys! The game plays great and the theme idea isn't bad, but I don't think having "one bullet at a time" is a restriction at all if you can rapid fire as many bullets as you want. 
And just so you know, the game is still playable after "defeat" panel pops up, and you can win it regardless. It's also sad that there is no  life indication or byte counter since you're having us gather them. It would have also been cool and on theme if the bytes were randomly generated strings of 8 ones and zeros.