The following updates have been implemented:

Added: "Civilian Killed" to the Stats
Added: Special abilities to some of the hats in the shop.
From now, your hat will be not only the ordinary fashion accessory :)
Added: Description text for the hats.
Fireman Helmet: You can walk through flames
Top Hat: Enemies drop more money
Police Cap: You start with bullet proof vest.
Robocop: Enable Burst mode for your default weapon (pistol)
Holy Pope Hat: Civilians will be imunne against your fire
Chef's Hat: Chance to drop Big Donut (restore 3 HP)
Cowboy Hat: You can fire 2x faster with your default weapon (pistol)
Batman Mask: The little bat will be your new brother in arms.
Frankenstein: Enables BlackWhite retro mode like in old movies.
Pumpkinhead: Unlock Halloween mode
Added (fixed) F12 key to take Screenshots
Enjoy the game!
ps. And don't forget, I'm working on a new game called "Gunman Tales" !