51 MW2 Weapons and all Attachments unlock;
Golden Ivory, Spinel Husk, and Arachnida Camos for every Weapon
All Field Upgrades and Killstreaks unlock.
Complete a total of 51 Spinel Husk Camo challenges for MW2 weapons.
Complete the Arachnida Camo Challenge: Usually, a set number of Special or Elite Zombie Kills with the weapon.

Requirements
1. Call of Duty: Modern Warfare III Purchased on your Account.
2. This service is for Zombies mode only. It does not include any DLC or seasonal weapons.