Walkthroughs for custom maps.

I've created a small map dedicated to the mechanics used during castle sieges. It hasn't been published on heroesportal yet (and it might not be published at all – it's 18x18 in size). According to my plan, the last 10 battles should be played in a specific order. That is, after completing a battle, the player receives a Pandora's Box, which should allow them to complete a specific other battle. I'm almost certain that I've made some mistakes somewhere, and the battles can be completed in an order different from what I intended. I would be grateful to everyone who tests the map and provides feedback.
https://dropmefiles.com/SUoGi