I want to play through the campaign in Heroes of Might and Magic V.

I've been trying to complete the Heroes 5 campaign for about 6 years, but due to external factors (Windows crashes, campaign bugs, computer breakdowns), I've only managed to get to the Dark Elves. After another attempt to start over, a bug appeared in mission 5 of the first campaign (Nicholas decided not to appear on the map to avoid getting beaten up by Agrael), which is extremely frustrating, and frankly, I'm already sick of Haven; I know this campaign by heart, as I've completed the first five missions dozens of times. Please help me unlock all campaigns or provide a cheat to complete the mission. Yes, the console didn't appear after entering the command. setvar dev_console_password = schwingedes-todes in autoexec_a1 and the line bind show_console '`' in the input_a1 file. Added 1 minute ago I don't want to start the mission and campaign over again.