Early enemy patterns can be easily dodged by just staying still, but if you get hit once when it gets harder, you're sent all the way to the beginning, which leads to sorta having to wait 30ish seconds every life before getting to places that encourage you to move/think.

It was hard, but not challenging :c It seemed a little odd that I had to download so much for a simple game.

I agree losing after getting hit once makes the game really hard. I think I got pretty far, but it's hard to tell. The bullet patterns were pretty cool, and it was neat seeing the huge ship coming up through the screen. A progress bar or visible score would probably help the player get a sense of where they're at in the game. Really cool assets and music, too!