Absolutely loved the game! Found sound bugs:
[Spoilers Below]
1. Between Cracked Brick and Conveyor Crossing (east of castle) there is a gap. Using this gap to transition screens soft-locks the game (you just keep falling).
2. This one is a doozy. [MEGA SPOILERS] After using the needle to bind [Spoiler], I called Polnareff and he flew me out of the room during the cutscene, which has put my game into a very glitched state. I no longer have any of the ghosts and I can equip the needle anywhere on the overworld. I do have all my other items though and a 8 carrying capacity. I can re-enter the fight though and win the fight instantly with the needle but even after that, I still have the same inventory bug. This has (from what I gather) also locked me out of ending #3 (I have the sword).
3. The runes in the Dream room tablet read SDIRE instead of SPIRE.
4. This one might not be a bug, but I have opened up all of the chests on the overworld and find myself locked out of acquiring Death's Key.
Again, I adore this game! Gonna try out the original Elephantasy next.