A decent start...
1) Same repetative music looping. It wasn't even a continuous loop. It faded out and started over instead of flowing back into itself so EVERY time it repeated...I heard it. And it got old. Fast.
2) Weapons don't get more powerful as you acquire more of the same color.
3) I racked up some 40 THOUSAND points playing the hardest difficulty then sat around for almost 4 or 5 minutes just dodging things without shooting while I waited for it to add to my actual score...ultimately saw no point in it.
4) Level ups typically mean great and wonderful things! ...what do they do here? I couldn't find anything except recharged health.
5) All enemy ships look the same. All three of them.
6) Levels WAY too long. I probably played the last level for 15 minutes before I said to heck with it and just quit the game to review it.
7) Autofire would be spiffy...
8) Almost no reason at all to play this game. Cute story idea..but that's all there is. There's no reward for doing well, nothing worthwhile that's accomplished.... it's like spending 2 or 3 hours beating an old school 8-bit Nintendo game that was mind-numbingly HARD and AWEFUL only to get a cheesy picture with some message like "You faced all the hardest trials and won! Congratulations!"