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 in order not to get beaten by Agrael), which is extremely frustrating, and frankly, I'm already sick of Haven. I know this campaign by heart because I've played the first five missions dozens of times.

Please help me unlock all campaigns or add 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 files

Added 1 minute ago
Starting the mission and campaign over again – I don't want to.