Graphic was alright. The sound effects reminded me of the Covert Front series.
I would have given this game four stars if I didn't have to play this game twice. During my first attempt, I ran out of ammunition cos I didn't know it took only one bullet to kill a zombie. There were at least seven zombies at different entrances. You couldn't have escaped the underground lab unless you were well-equipped with twelve bullets (max).
Some tricky sections of the game:
- Check the back of the desk;
- Enter the elevator with torch;
- Enter the unknown passage with a rifle (you don't have to combine it with the bullets).