How can I get 3 swords for a won level?

You get 0 swords if your king dies.


You get 1 sword if you win the level, but lose more than 60 units.


You get 2 swords if you lose 60 units or less.


You get 3 swords if you lose 30 units or less.


Tip: If you build walls and protect them by archers, you lose fewer units than if you just fight with infantry.