Okay, here is the thing.
This game is trying to be a Jack of all trades, but is, apparently, master of none.
What I'm trying to say, is that Starless is trying everything available, but time to get to these "things" is much too great. You either like all the kinks this game has to offer (and will still have a hard time trying not to fall asleep) or some contained within, that are either scarce, or prolonged.
Conclusion: It's all basic stuff in there, game put's everything in line, one after another without branching, thus is extremely long.