Rather than make a video for this one, I'm going to give a brief rundown of potential sticky parts and what to do. Honestly, you shouldn't need one, it's easy.
If you're loading up an episode to do it, it's episode 5, the first chapter, "Night Life in Bright Falls." If you prepare and don't waste powerful weapons, then there aren't many tricky moments. The two potential tricky spots are:
The church defence and the helicopter defence. One mid-mission and one at the end. In order to unlock the achievement you must finish it, from the police station to the helicopter, without dying or restarting. Just make sure you load up on all the equipment before you move too close to Sarah and Barry. Otherwise, the Taken come. If you scavenge the lot before hand of both areas, it should be easy.
The church - the best way to do this is the hunting rifle and flash grenade combo on the left hand steps (with your back to the church). It should be easy as Sarah will be on hand to help out.
The helicopter - you're on your own here. Just use the flash grenades wisely, shoot the gan canisters to save flash grenades, and try to turn on the lights whenever possible. Stay on the pad as well. If you stick to that, you'll do fine.
Oh, do them on normal.