Just try to get 100% on First Party games, and Assaissn's Creed.
would you like to share this achievement ^^"?
If someone just shows it up in a trade screen you get it, i could chat with my brother, he has the item. Whats your lvl? N hardcore or no?
Complete the Campaign on Heroic difficulty. - Halo: Reach
Complete the Campaign on Legendary difficulty. - Halo: Reach
Complete each Campaign Mission on Legendary - alone. - Halo: Reach