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Duman, do you have any? And who are they? (if you meant mods and NCF).
Well, I'm saying that there will be a campaign for single-player playthrough. That's exactly why I suggested it. Although I don't fully understand what's wrong with mixing the progression of different factions. In my opinion, it's cool.
No. I used Aru as an example. You can create a summon, but base it on the ability of Archdevils, only slightly modify its calculation conditions based on the hero's stats (like with Aru). That's what I meant.