Thank you for your honest opinion. Yes, I deliberately made the game direct the player in a very narrow way, mainly because of time constraints (it was a gamejam game, after all) and it had two effects : first, it made the game very straightforward, and second, it made all the clues about the story harder to find. The clues are there, just out of the way.
So I guess it really depends on the type of player you are, in the end. You're obviously more goal-oriented, and interestingly it brings another reading of the game's events, at least to me.