Here is the full list of all 13 Heavy Burden achievements.
Tell the rock to move
Make a jump at the end of the first level
Contrary to the warning to take the stone in paradise
Begin the path of redemption
Read the first note in the cave on level 4 and leave the cave
Read all the notes in the cave on level 5
Read all notes on level 7
Destroy the large glass dome on level 9
Light the altar without prayer
Read all the prayers at the altar leading to the religious ending
Read all notes in all caves
Reaching the philosophical ending
Reaching the religious ending