Impressed and spooked.
The game is centered around one exterminator's desperate attempt to get out of the building he was called to do a job at. When he arrives, he finds out that there are zombies inside the building and that he can't escape. He has to gather tools to aid him in fighting the zombies off, from guns to knives for fighting, to gas and lighters for puzzle-solving. All of it requires you to have a sharp eye, and when the zombies pop up, shoot the head quickly!
The only downside was the ending. It seemed kind of...depressing. After all that...it seemed kind of unfair to the guy. Still, I'd like to see more games like these from you.