Pretty fun! At first I thought that this is gonna be a pretty standard top down shooter, but you made it work. First of all- I like how you could buy upgrades depending on people you save. I ended up looking for specific occupations in groups of survivors, which was a nice touch. Secondly- the intensity ramps up fast! I thought the game was a bit slow at the start, but soon all those upgrades are put to the test! Gotta say- the gameplay is pretty fun!
The graphics could be better. They are readable enough, that I always knew what was happening, but some better character art, and a bit variety in the environment (maybe a street and a sidewalk instead of the same ground everywhere, a car wreck, or some bushes) would benefit the game.
The sound is ok, but like with the graphics could be improved. Some background music is always nice and works wonders for atmosphere!
I liked what you did with the theme. As I said- I took who to save into consideration each round!
Over all- good, intense game! Keep it up!