Here is the full list of all 8 Light and Embers achievements.
Started an infinite fire.
Watched an infinite fire for 60 minutes.
Started first fire in Keep The Fire Alive mode.
Keep the fire alive for 10 minutes.
Keep the fire alive for 20 minutes.
Stoked the fire 50 times before the fire burned out in Keep The Fire Alive mode.
Listened to Music for 10 minutes after the fire burned out.
Something visited camp and I found it.