You certainly brought it this time.
-The game was fun and got directly to the point.
-It had a sort of "frantic-ness" that made the gameplay entertaining.
-The deviation in the bullets kept it fresh without totalling pissing me off.
-Has a "wow" factor. Levels 3 and 4 certainly did their job making me run away from 10+ guys.
-Good music, I love good music in games and yours went well with the game.
-No reaction with the targets, it would have been nice.
-The store should have been in between rounds, i can understand how many people would have missed it on the front page.
Other than that, the game was pretty solid! Although there are a handful of games that are at a little better quality than this i.e. (Endless Zombie Rampage, and other zombie games) you certainly gave it your best try.