To complete this task, you need to build a graveyard in the game first. Cemetery can revive the dead. After village level 7, the undead can spread diseases. You can throw your undead into the old dungeon or curse the cellar, and the hero will defeat them. Moreover, the village needs a temple, which can treat diseases caused by zombies, skeletons or mummies by hiring players such as owls and unicorns in the forest.
summary
Generally speaking, restoring health means curing these infectious diseases or diseases through temples. The dead raised in the cemetery are also the source of infection. It is very simple to speed up the task by fighting infection and then treating it.
Heart of the King 2 Click on the demo.