Personally I thought it was fun if a little too easy on the bosses. I also thought that the one gun the tarus I believe was awesome due to the one shot killing of nearly everything. Shield is an epic win against everything but the only enemies that I found too hard were the ground ones due to their ability to fire right at me every time. Lots of jumping involved. I also couldn't upgrade my speed to full but that was only glitch. Best special in my opinion was the pulsar cannon for the complete anihilation.
I have to say stichland is very fun, as I have always been a big fan of the "Drive a tank around and shoot down planes trying to drop bombs on you" genre. It's actually based on a game called "Heavy Weapon" by Popcap (they're the guys who made "Peggle" and the original gem-swapping game, "Bejeweled". I'm not sure if Stichland was inspired by it, or if they just used the same game engine, but the combat is quite similar (only in stichland, you can't kill the bombs). I adore Heavy Weapon, so I like Stichland.