Thank you!
I did make the music, but it's a bit rushed since it was the last thing I added, but I'm glad it fits! ^-^
For the Doors I tried to make them look like hidden passage ways, but In hindsight they do look like they're just part of the normal walls.
For the V I did consider having a textbox appear from a plaque, but I wound up getting stuck working on other things like the collision and button/door stuff and wound up forgetting to implement it xD.
I'm glad you enjoyed the game aside from those issues! ^-^
Thank you again for the feedback and suggestions!