OK phew, managed to complete this one! I was stuck for the longest while trying to find the key to the wizard's prison because there's a little bug where if you can't loot the final bag completely because your inventory is full, even though there were just potions I think left in it, it won't progress your quest. And I had no idea how to make room in the inventory until I noticed the command on the main page.
ANYWAY, GOOD JOB! I really liked this one and played to the end. Good art, good atmosphere, very classic vibes, very well done! Had fun with it.