THIS IS AMAZING. Thank you SO MUCH for screenshoting your experience!
Oh yeah, I think I DO have to explain what I think actually happened-
First off, the harpy (the boss) has an attack where it smashes its head onto the ground. After a certain number of smashes, the boss gets dizzy and falls to the ground. So, I think what happened was, as you took a screenshot, the boss smashed its head and fell WAY DOWN into the opening at the right.
Next, about the void at the top of the tower. My expectation was that, when the player sees the harpy, he'll say "Woah! I need to deal with that!" and then focus on defeating the enemy. Once defeated, the ending plays and that's that. What I failed to consider is that, after the harpy falls to the ground, it's basically harmless now and the player can kind of just... keep scaling the tower.
And yeah! When the harpy gets dizzy and falls to the ground, the player is meant to take the opportunity to attack it by dropping a block on its bruise. Looking at it now, since the harpy is pretty much motionless and doesn't get back up on its own, it makes sense why it looks like it's just... dead lol.
However, even though you TECHNICALLY didn't actually defeat the harpy, I, as the creator of this game, hereby grant you the "Still Won Even Tho The Harpy Not Dead" pass.
Once again, Thank you for trying out my game and leaving a comment! I really appreciate it!