Conquer the enemy castle by firing catapult stones at it and destroying the whole castle.Use the mouse to aim, then fire away a stone by holding the mouse button until you have charged enough power. Hitting a gate will awaken enemy knights who will charge at you to battle. Your own guards are skilled and can usually defeat one or two enemy knights.
Hold left click to charge, release to fire.
Tip: After completing a level, you can choose an upgrade to help you in your quest! All upgrades are permanent and last throughout your journey.