AMAZING graphics, very cool style.
Great music and sounds.
Great looking bullets and explosions, etc.
Wierdest gameplay ever (in a bad way).
Long sections of holding still why strings of enemies fly into your butt, followed be strings of enemies where you wiggle back and forth, followed by sections with super fast snipes while you're suposed to left and right combos (very hard on the wrist!) that must begin with a direct (no diagonals) movement towards the enemy, who is usually not destroyed all the way, and then shoots you.
What the hell were they thinking?
Man I wish they would have kept everthing good about the game and then just let me shoot stuff. The game really looks good. I mean, it seems the game is made to play just once- and then credit feed at that! I would never want to sit through the first levels and let enemies fly into my butt twice in a row, just to memorise a later level.
At least I got to shoot some nice lungs at the end (wtf?). At the head of every great conquering military is a bio level- that's how they make all those tanks
*edit
Considering the credits, what can you expect from a game made by four people. (sure wouldn't expect it to look so great

*another edit
Man, I was just researching Exzeal and found this vid http://www.youtube.com/watch?v=lNbSMfHsdaE That left and right stuff looks BORING