Walkthroughs for custom maps.

Dandy, in terms of combat difficulty, The Last Crusade is significantly easier than Metataxer's Revenge, but in terms of logistics organization, it's many times more complex. Overall, it results in a map with roughly comparable difficulty. I think you won't be disappointed. Just wait for a slightly newer version. After my playthrough, the author will tighten things up even more.

You don't need to wait for purple to solve the first simple puzzle. I couldn't buy azure in the first week, only in the second.

Well, in any speedrun, logistics is a nightmare. :)
In 3.3.3, a daysman with tactics is available. After leveling him up a bit and with some kind of newbie from the daysman's tomb, he can kill at least 2 azure creatures from the stash, and there's a chance he can clear the entire stash without a preliminary hit with an implosion spell. But an implosion spell, even if not directly on the stash, is still needed to kill the computer-controlled enemies that will come to visit.
P.S. Is it normal that my saves don't work in the folder corresponding to this map? I assume the problem is due to the name containing unusual characters.