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Pomazok1329 No upgrades, and no places to replenish troops; artifacts are only obtained in battle. That is, all conditions are in place for a fair fight, and not for roaming the map to "replenish mana" or complete a quest.
Regarding places to replenish troops, do cities count or not? There are maps where you cannot build troop-producing structures; you can only replenish your army in a couple of places on the map.
Or, alternatively, only quests could provide troops, meaning you only get troop increases in the castle.
Take a look at these maps:
We take a long time to build up, but then we are actively attacked.