If you're having difficulties getting the glitch to work, read this:
This comment that describes it right now is kind of lacking detail. Get the chainsaw and the hunting rifle to start. To get these, when you start the game invest lots of hours into getting survivors as they help you kill zombies in the night. Then start using some of the hours to get weapons. When you have both chainsaw and hunting rifle, when the night begins switch to chainsaw and hold the mouse button down. Now hit spacebar, then let go of the mouse button and hit spacebar again a few times until it switches to the hunting rifle. Now you will have the hunting rifle with 99 ammo. If it ever runs out, just repeat the glitch. Using this you should have no trouble getting both badges. For the Sniper badge, just die intentionally on Night 19 so you can keep repeating it and get headshots. Hope I helped someone.
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