Love the concept and the gameplay!
I enjoyed this game from beginning to... about level 20... only because I didn't take a break! I love the idea of a post apocalyptic delivery service. There would be services like this in that world, and this lets us experience that! I like the upgrades, and the choices of guns so far. Mixing different types of weapons is key to survival, and the high cost of upgrading the actual vehicle makes the game appropriately challenging. My only frustration would be that some levels make it extremely difficult to shoot the suicide bombers due to the volume of enemies on screen. And the first level for some reason... I can't figure out how to get the combo medal! Keep up the great work!