JTF 2 Anniversary Challenge Romashka 03.03.2019 2017, Charm, Weekly Challenges Reward Comments 05/12/2017 JTF 2 Anniversary Challenge overview Rainbow Six Siege – JTF 2 Anniversary Challenge Celebrate two years of Rainbow Six: Siege with the Ubisoft Club Challenges. Win 10 rounds with JTF 2 to obtain Buck’s Skeleton Key charm. Skeleton Key charm