Great use of the theme. Love how there are some doors that can only be seen in another reality. Love how the ability room was done. The ability are not far from the rooms that needed to use them. But the layout is not so linear that you have to collect them before getting to the rooms. And the game also has multiple ending.
If you die to an enemy that walked on the door you spawn in, you'll keep dying again and again for a few amounts of time. The walking sound keep playing in mid-air. And in the last scene of the bad ending, the character keeps sliding toward the right after dying and make the dialogue unreadable.
Overall, good game.