The only thing I do is update the download link from Mega and I did that recently, so I'm guessing that by doing it that way, itch.io doesn't reflect that the file was recently updated.
The current version of the game is 1.5. If in Mega, at the moment of downloading it, it says 1.5, then you have the correct version of the game.
We should definitely do something with the necromancer, thanks for your suggestion.
Unfortunately, it's too late to change the final objective of the game to be the coliseum, although it is true that, in future updates, we will add post-game. Perhaps we could reduce the reward that the necromancer gives you.