Complete the required Mastery Camo challenges for the weapon category in BO7
Reach the final camo tier tied to the Molten Ash unlock path
Finish all prerequisite camo objectives for that weapon
Equip the weapon and verify the Molten Ash challenge in the camo menu
Complete the specific kill or progression requirement shown for Molten Ash
Claim Molten Ash from the camo unlock screen once the challenge is finished