If you wander off the common roads in Texas, Leatherface will kill all your friends and anyone else that wanders in to "help" you.
On that note, just abide by these guidelines for camping or vacationing and you will not be killed (probably):
Do not camp near a lake where anyone has drowned.
Do not have premarital sex while on any camping trip.
Do not tell stories about horrible grisly murders happening in the very spot you're camping in.
Do not wander off without your friends, you may never see them again.
If you hear a strange noise, leave it alone.
Bring weaponry of a high caliber and make sure at least 2 other people know how to use it in case of your death/dismemberment/contraction of some insanity inducing disease.
If a stranger wanders into your camp, politely at a distance ask him to GTFO. If stranger does not comply, see previous guideline and fire a warning shot followed by a headshot if he/she/it does not flee. Compassion gets you killed. And headshots kill zombies. DO NOT under any circumstances TOUCH or GET CLOSE TO this stranger.
If bullets do not work on whatever is trying to kill you, and it only walks at a normal pace, do not outrun it, do not hide, keep it within sight distance at all times and KNOW WHERE YOU ARE IN RELATION TO THE MAIN ROAD.
That said, do not camp far from the main road in case of emergencies.