Narnia Prince Caspian

First you need to kill all the archers while avoiding Gregoire's attacks. After they are all dead, a new group of enemies will protect Gregoire. Kill them all still avoiding Gregoire's attacks. Now Gregoire will use 2 attacks: Jump and Charge. Dodge his Jump attack and his sword will stuck in the ground. Now he's vulnerable. Hit him and repeat the process untill he is beaten.