It's not a platformer, it's a walking sim. Take it for that, then you can enjoy the beautiful graphic, and don't need to care about the missing items, simple actions, lightweight puzzles.
Makes sense , based on the creators' other games.
It's still good, but it feels like they run out of their budget (ideas?) before they could finis it. The story is unfinished, and at the end it feels like it is entirely pointless, no meaning. The last episode is an utter nonsense.