Here is the full list of all 20 Kholat achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
You've survived!
You've unlocked the incident in the bunker.
You've encountered the anomaly.
You've unlocked the real ending.
You've reached the tent.
You've unlocked all safe spots.
You've explored the cave.
You've collected a note in the cave area.
You've collected all reports.
You've collected all articles.
You've collected all journal pages.
You've collected a note in the throne area.
You've collected a note in the tree area.
You've collected a note in the burned forest area.
You've collected a note in the hunters cabin area.
You've collected a note in the altar area.
You've collected a note in the radar station area.
You've lost the chase.
You've collected a note in the church area.
You've collected a note in the circle area.