Get over the bunker with an intact ring
	Have your ring broken
	The guards on top have stronger pistols

This is the second line of defence on the edge of the castle grounds: a bunker with water pistol-wielding guards inside, in front of, and on top of it.
The contestants are all armed with water pistols and have paper rings stuck to their helmets. On go, they all rush over to the bunker and must climb over the top of it. As they do, the guards will try and break the contestants' rings by shooting them with water. If a contestant's ring gets broken they have lost and are out of the game.
The guards also have rings that the contestants can try to break. If a guard's ring does get broken they can't shoot anymore.