With the release of Modern Warfare 3, all of the weapons from Modern Warfare 2 have been included in the new title. While the 77 weapons from MW2 have the four mastery camos from that title, with the new Zombies mode there are another four mastery camos to unlock.
To start, players must unlock the Golden Ivory Camo for a certain number of weapons per weapon category. The Golden Ivory Camo requires players to complete four base challenges, level up the weapon to a certain amount, and complete the final Golden Ivory Challenge. The challenges range from 250 Zombie kills to 30 Hellhound kills to kill zombies with unique damage with Fire. The challenges require the players to play differently each time, focusing on different aspects of the Zombies experience.
Once Golden Ivory is unlocked for the MW2 weapons, the next Camo requirement for Bioluminiscent is to complete Spinel Husk for 51 weapons. Unlocking the Spinel Husk Camo makes players unlock the Golden Ivory Camo for a specific number of weapons in each weapon category and then complete the Spinel Husk Challenge. The challenge for each weapon is to get 300 Kills with the weapon Pack-A-Punched. For example, when trying to get Spinel Husk for the M4, players need to have unlocked Golden Ivory for 8 out of the 15 MW2 Assault Rifles and then get 300 Pack-A-Punched kills with the weapon.
The final stage to unlocking Bioluminescent is to unlock the Arachnida Camo for 51 of the Modern Warfare 2 weapons. Arachnida requires unlocking the Spinel Husk for a set number of weapons in the class, but there is one more challenge to complete per weapon. Players will have to get 10 Special or Elite Zombies kills for each weapon. The Special and Elite Zombies can be spawned onto the map by starting 'Eliminate the Bounty' contracts.
After completing each of the three camos for 51 weapons that were carried from MW2 to MW3, Bioluminescent will be unlocked. This camo will take the most amount of time and patience out of all of the camos but will be extremely rewarding to complete. Good luck and have fun grinding for Bioluminescent!
