Walkthroughs for custom maps.

I would like those present to test one aspect of the map Prison of Inferno. Using Gunnar, after casting Fly, you need to fly around three seer huts (highlighted as mage huts) and, in the process, exchange 2000 ghosts for 1700 vampire lords. My problem is that, after leaving the zone with the hut where you exchange vampires for vampire lords, Gunnar flies to the mage eye nearby, but then refuses to fly any further, even though he still has plenty of movement points left. And to kill the last hero near the Necropolis, you need to attack him with Vidomina and vampire lords on day 1; otherwise, he will gather all the creatures into one stack.

In general, I'm interested in checking Gunnar's flight to see if there's a bug with his movement. Or maybe someone has ideas on how to complete this map correctly, as I suspect that I might be misunderstanding something, and the problem isn't due to an error by the author.