Incredible atmosphere, awesome graphics and pretty poetic vibe! I also didn't expect it to have a sung song—pretty cool. Now, the platforming was a little bit frustrating. Sometimes, I felt that my death was unfair...
And the protagonist being slow, plus the death animation being a little too long for a game about dying, along with the lack of new mechanics throughout the levels (buuut, I love how the existing ones are introduced!), made the game feel a bit boring in some parts.
Also... I found 2 cats... This made me happy, so let's forget any problems the game had.
This game is GOTY :D