The game has a fantastic atmosphere, but the gameplay is pretty dull and not interesting.
True, still, the final level + ending is worth the whole... ordeal.
Just have the puzzle solutions on your phone and enjoy the ride for the little that it lasts.
It's a shame since this could have been something REALLY special with the right people at the helm, instead , what we got is a poor walking sim (wouldn't categorize it as an "action-adventure") with terrible puzzles and super weak action moments with the art-direction and story being the only salvageable things which just barely manage to elevate this game to "OK" status instead of a pure dumpster fire one.
For what it is, I enjoyed it - that ending stays long with you after finishing it.
A "one and done" game with absolutely zero replay value.