– I often get a „Game over” screen while I'm not sure what are the lose conditions (therefore I'm not sure what to do to avoid them). There was an occasion when I got an insta-game-over whenever I restarted, however I guess that was a bug, „Clear Data” helped it.
– The bullets are very slow, thus it is very hard to aim.
– The controls are inconsistent and confusing: I have to aim with keyboard, shoot with mouse click, then collect the coins with the mouse cursor. Too many controls to keep in mind. Full mouse control would have been better.
– If I turn off the sound on the title screen, I still hear the fireworks.
– I couldn't get through even the first level. Because of this, I couldn't experience many of the announced cool features of the game, like upgrades, auto-fire and laser sight – I see them in the „How to Play”, but I never got a chance to unlock and try them.
– It is very subjective, but I don't really see the theme worked into the game.
– I like the graphics (especially the robots, assuming it is your work), and I also think the audio is pretty decent (assuming it is your work).
Keep it up, make more games, practice, stay determined! You will get better. :)