Edit: 'The lost Emperor' is an entertaining scenario, and I enjoyed playing. It is worth to edit, the issues are minor and easy to fix.
When the battle starts, the player 1 towers convert six Gaia Janissaries. They fight the enemy units, which should attack after you give the trade cart to the monk. At the end of the battle, they go north and you take control of the swordsmen too early. The Janissaries should be the same player as the Plumed Archers and change ownership together with them. After El Cid joins you, the player does not know where to go. You create the flag in trigger 'go to regurison town', should be in 'u agree', the second one, you have two triggers with the same name. It reads that you receive the knight, champion back when you bring Charles to the castle but you leave with Charles again. Add two change ownership effects to trigger 'find charles', player 1 to 2 for Charles and 2 to 1 for the champion. The flag misses also for the next mission, in effect 7 of 'find charles' you create again the flag next to the castle, should be a flag for Regurison small town. The trade cart creates and the villager chat displays before the player arrives due to the condition of trigger 'player1 here', change Quantity of the condition to 2. The game engine detects the tower as 1 unit in area, which you changed ownership to player 1 in trigger 'timer 4s', effect 2.