There's a bug where when you get a rare unit, and you try to place it somewhere where it can't fit, it just disappears, and it doesn't go into the unit bank. There goes my Aries :(.
It would be awesome to be able to select turrets using a drag function, and delete/move all. But, aside from that, great game, great developer, great idea.
The only thing i would change about this game would to add more difficulty levels.... Starring everything on hard isn't really... hard. But then again, bullet hell games will do that to you ^w^