I think current status of level 1-3 is interesting and challenge. This is a typical arcade-mode game, which need well design of each level and CSE did well in level design. It remind me of those classic arcade shooting game.
The shooting mechanism is very interesting and creative. But the control mode of flash shield may need much more polished. It brings too much risk and usually made me feeling frustrated.
I can't wait to see the finished version of this game. Goodjob!