Using this feature is completely optional, but I found it extremely useful as mistakes are common and even on normal difficulty settings, the game is damn hard. (cogconnected.com)
For this review I completed a playthrough on Normal difficulty setting, and found roughly 70 % of the recordings and in - game documents. (gamecrate.com)
The game isn't really that difficult if you just play on the normal difficulty setting while you have the option of multiple difficulty settings, there isn't much of a replay value. (gearnuke.com)