Patch 1.6.1 for the original campaign.

Dragons were in the initial version of the mod, until I downloaded the new version. I finished the mission using cheats.
I liked that in the 3rd mission, Markel's towns transform with effects.

It's bad that they removed the fort on the hill near Mythgard; in the second mission, I raised different vampires, liches, and undead, but I couldn't combine them.  
In the 5th mission, playing as Markel, I found a new problem. In every battle with neutrals, after they are killed, the battle doesn't end, and my units and heroes continue to take turns. Because of this, I couldn't get the Angel Wings. I had to use cheats again to teleport to Godrick. After the victory, the mission doesn't end either.

Yes, I realized that in the initial version, the script wasn't loading, and nothing worked. In general, if the script doesn't load, there's no point in waiting, and it's pointless to talk about what happens when the script is broken on the map.
I fixed the fifth mission for the Necromancer; it turned out that the Nivale players were applying the battle script with Godrick to Markel, but since it was initially broken, the battles weren't breaking. Now everything should work; the new version is in the first post.

The fort on the hill near Mythgard was specifically enchanted with a special spell called "Blindness," which is cast on the player, and they can't find the necessary object on the map, even though it's there. Cast antimagic on yourself; it might help.

Added 6 minutes later

then this is a problem; many players have Tribes of the East, and they won't specifically uninstall it just to try the changes. How can we adapt it to them?
Regarding the timer, I'm saying that it's an additional inconvenience for the player, not adding any interest or importance, but simply making it impossible to stop – there's zero positive effect, and no importance either; it's a complete negative. What if you need to go to the bathroom or get a phone call, and the battle has been going on for a long time – do you have to replay it? A hero = difficult in battle, not inconvenient to play.

I've heard that Tribes of the East is installed in a separate folder and doesn't work well with the original game, which is installed separately. Adapting the game to the mod is certainly possible, but it requires serious balancing; in Tribes of the East, the player might be able to exploit the game too much, for example. I won't make a separate mod until someone completes the original game with it.

Regarding the timer – well, there will be several such battles in the game for heroic characters, from which you won't be able to tear yourself away, and they will be on the verge of being passable. Therefore, they won't be long; if you don't defeat the enemy in three to five turns, then things are bad.