For all you Halo fans out there, Pizza Hut UK is having an Halo 4 competition along with several other goodies, such as a free Halo Warrior Armor Red for your Xbox Live Avatar. All you have click on the claim coupon button and sign up your e-mail address. The contest form states this is only for residents of the UK, so just pick that in the drop down menu. Once you submit the form, it will give you a redeemable code for your XBox Live Avatar. Get your Avatar code here. Redeem your Avatar code here. Let us know if it worked for you in the comments!