I had given this 5 stars until I decided to try out the antimatter shield my 2nd time through General mode. It just makes the game too easy IMO :)
I think this game is probably beatable without it if you use your bonus points very wisely. I made it to level 44 before giving up, because I had spent every point on Investment until then and it became clear I needed some of the other bonus upgrades to complete the game.
This is a good concept with good art, but the slowness of the bullets kept me from having any fun playing it.
For anyone who's still stuck on the final boss, save up 3 of those "I" power ups that give you more powerful bullets, then concentrate fire on the boss. He died for me just after I activated the third "I". I found missiles and lasers to be of no help at all for that level.
Decent shooter. Becomes really easy once you realize you just need to specialize in one main weapon and only pick up powerups for that weapon. Once I got level 4 blue shots and level 3 lightning I never lost another life.
Found the hard badge quite easy, though I've played this before a few months ago. The impossible badge is probably the hardest badge I've seen on Kongregate, even if it weren't bugged ;-)
Really innovative concept! Juggling two mental threads like this is quite challenging. Definitely one of my favorite games on the site. Finally got my the badge today after probably a hundred attempts xD
Try keeping both balls in a corner most of the time if you're having trouble, moving the mouse ball to the center before each Rotate. This doesn't work very well after 3:30 or so because there are so many triangles along each edge, but I found I could at least get to 3:30 more reliably this way.
 "Shield Defense"){kind=icon}
 "P.O.D."){kind=icon}
 "Line Game"){kind=icon}
 "B29 Assault"){kind=icon}
 "Triangles"){kind=icon}