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Ganebal, I think the first and second missions were mixed up in the latest posts. I didn't realize it at first because I played it a long time ago. But yesterday, I completed this (first) mission in version 3.0.
Both missions are similar in that they are speed-based. In one, you have to escape from Godric, and in the other, you have to outrun a demon. In both missions, you have to defeat the first hero you encounter. In this mission, it's a demon, and in the second, it's a knight. I easily defeated him without even paying attention to his color.
In both missions, almost all the demonic neutrals join you. In addition, there are dwellings where you can buy troops. In this mission, there is a Fortress where you can upgrade troops. However, you need money. Therefore, at least some of the chests should be taken for money.