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Thanks to the cursor change, I found the knowledge library, and there, near where it mentioned 70,000, but it's now empty – is this a one-time bonus?
1) I think the Secrets are too complicated; they need to be simpler, and the location should be visible. Also, there should be a squad guarding the secret, which, for example, isn't visible, and after defeating it, another one appears (a little trick).
2) Yes, the squads are different, but it would be nice to have the option to enable automatic battles; not everyone wants to fight constantly. Let it be optional.
3) I'm not very knowledgeable about this. It looks decent, everything is visible, leaves are falling), but could we have snow? Near the mentor, the crystals are unnecessary.
4) What choice? I don't quite understand.
In the Necropolis, the armies are unrealistically large. You could add a couple of prophet's huts.
Can you move to another area of the map?