This chapter of the Outlast II guide is a complete walkthrough for the stage called Heretic Cave. Here, you can find hints that will help you complete it. Moreover, recordings and notes that have to be recorded with the camcorder as well as the location of batteries and bandages, which are integral part of the gameplay, are listed in this section.
Yet again, you will be blinded by light but this time without consequences in the like of the last nightmare. You've come close to the buildings you see in the above picture. The direct way to the heretics' buildings is unavailable so you must head right. There, you will find a path full of dead birds that fell to the ground after you'd been blinded.
Record the birds Dead birds #25), and then climb up the ledge with bloodstains on the right. Then, head towards the light. Once you've reached it, you'll see a cave entrance on the left. Use it. After a second, you'll slide down to the lower levels of the cave. Go straight on.
You will enter the location from the picture above. Record the idol (Cavern Temple #26)  and head towards it. You can find a battery on the body on the right . You have to jump to the ledge on the right, right next to the body. Next, go through the narrow corridor until you reach another light source. Move further to squeeze through the chink and arrive at the heretic settlement (New Temple Gate #27). Record it.