Heroes 6 - Discussion

Ugh, what a clunky system for completing the game. And if everyone really did complete it using the Path of Blood, why wasn't I warned? It's also unclear whether you've actually finished everything or if there's still one mission left. For example, I completed this campaign first because I chose a hero with the Path of Blood. But with the Path of Tears, I only have one hero, and he's not very well-developed.

Does the completion of the game depend on the order of the final missions?