The game is really cool!! Some notes tho:

• The player feels a little bit slow, 
• The charge attack is really hard to dodge (if possible at all)
•  The upgrade menu is hidden (or rather, the buttons on the menu aren't clear of what they do)

Hey! Cute little game! But a bit hard though. The thing I like the most is the graphics.. It's so simple and calm. Good job with this entry.

Great Game. I wish there were more upgrades though like movement speed or bullet speed