This was... different. Kinda frustrating, too. One of those things that just isn't fun for especially long, in my mind. Got the badges and that's about enough for me.
I wouldn't call this game unfair per se, but it is far too luck based near the end, especially the bosses. If you get tanks in the wrong order, or they end up in specific sets of places, you're doomed because you just can't move fast enough to hit every projectile, or even enough projectiles. It's pretty good game, but the end crosses the line from 'challenging' to 'frustrating.'
Awesome game. A space shooter in the style of 80's games that isn't overwhelmingly difficult within 3o seconds. Got both the Bros home safe, too. Just wish I could play it on dual joysticks; it's really tricky on the keyboard.
There were a couple that I had to finish by just clicking everywhere, the stream one in particular, and I would have given up if the art wasn't so amazing. I soldiered on because I wanted to see every scene. My favorite was either the magic briefcase or the final one.
 "Castle Crashing \"The Beard\""){kind=icon}
 "Doeo"){kind=icon}
 "Shield Defense"){kind=icon}
 "SHIFT"){kind=icon}
 "Gamma Bros"){kind=tracking}
 "5 Differences"){kind=icon}
 "The Unfair Platformer"){kind=icon}
 "Scribble!"){kind=icon}