Start by building your skeleton army, then lead your heroes and legions to conquer land. The supplied Necro Factory description presents army-building and conquest as the core activities, but it does not specify which units, upgrades, or battle tactics to choose.
What to do in Necro Factory
Necro Factory is described as an idle RPG set on a dangerous continent. Its stated goals are to build a large skeleton army, lead heroes and legions across the land, and compete against other players.
Use those goals as your starting point: build your army and lead it into conquest. The available description does not provide detailed progression steps, resource priorities, or hero-placement instructions, so it cannot support more specific strategy advice.

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Player Comments
138 players commented on this guide.
I wish I had read this before upgrading the wrong thing.
This helped me understand heroes much better.
Nice guide. I am checking the other HOT articles next.
The explanation is clear, especially for beginners.