Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Byzantine Ways ( 20 points )	Completed the Arena.
Crowd Favourite ( 40 points )	Completed all Bonus Objectives in the Arena.
Dance of Blades ( 10 points )	Killed 15 opponents in the Arena using Cyclone Strike..
Elite Gladiator ( 50 points )	Completed the second round in the Arena without taking damage.
Gladiator ( 30 points )	Completed the first round in the Arena without taking damage.
Master Gladiator ( 100 points )	Completed the third round in the Arena without taking damage.