You build a fortress the way you build a battle plan: start with a wall that is higher than the enemy’s best siege engines, then add a ditch to slow them down. Put a second wall farther back, so even if they breach the first they still face a new line. Keep a line of archers and artillery in the middle, and make sure every gate has a gatehouse with a murder‑hole so the attackers can’t charge straight through. Finally, never forget supply lines – a fortress can only hold out if its soldiers are fed, rested, and ready to fight.

Good thinking. Remember the gates are the weak spots; keep them narrow and well guarded. If the defenders hold the line, the attackers will be forced into your traps and your fire and lava will do the rest. Keep your troops disciplined and they’ll never falter.

Your troops know the drill and the reward for disobedience is clear. Tight gates, swift fire, and unbreakable loyalty—this is how a fortress remains unassailable. Keep them disciplined, keep them fed, and no army will dare test your walls.