Well, the intro sais it's a world without aiming, so no complaints there. :-) I was too slow correcting the angle for enemy number 17, so he got me first.
I had fun with your game. I think our games share some similarities, not only in terms of the environment. In case of a big level we both should guide the player towards remaining targets, at least if they are few. I had something in mind and then couldn't implement it in time.
I like how you remixed other packs into the city/construction environment.