Hello and thank you for your feedback!
Falling through the map is intentional: as you can see in game, there are holes on the ground.
BUT, I’ve noticed for whatever reason that the game object I use to teleport the player to the third place mysteriously comes back to the origin (it didn’t happen in my tests), and I’m currently working on that. Also, the “void” I’m using always teleports you to the first place, even if you have completed it. I’m fixing that too.
Thank you again!