If layer 1 says 100 ash as a reward, 2 says 200, and 3 says 305. The player is led to believe they can get a total of 605 ash by doing all 3 layers.
It states that “You will gain the rewards of lower levels”. So if i do Layer 3 first I should get the total 605.
However that is not the case. The total for all 3 layers added up is the 305 stated on layer 3, so unintuitive, grindy mess that misleads the player.