Sniper Vs Zombies

The zombie apocalypse burst out and you are the only hope of the people who stayed with you in the building surrounded by undead. Before all of this started, you were a professional sniper. Luckely, you have a sniper in your hands. The only problem is that there is pitch blackk out there and you can not see the zombies unless you focus on them. Quickly search for the zombies in the dark and shoot them while you havea time. Stay as long as possible and save the people who are with you in the building. You only have 10 seconds to target the zombie. Have fun.