I didn't understand where the campaigns are. I played as a mage. The first scenario is about a sorceress and a genie. The second is about a mage-engineer. The third is about a lovestruck mage. I thought the point of the campaigns was that the heroes progress from scenario to scenario, and by the end of the campaign, it's a beast with level 25 and high stats. But here, you don't have time to develop a hero, and he already dies.

Added 1 minute ago
Half of the creatures are from the sixth game.