Montagne Birthday Challenge Romashka 03.03.2019 2017, Charm, Weekly Challenges Reward Comments 10/10/2017 Montagne Birthday Challenge overview Rainbow Six Siege – Montagne Birthday Challenge Wish Montagne a Happy Birthday with the Ubisoft Club Challenge. Play 7 rounds as Montagne to unlock his Montagne Medallion Charm. Montagne Medallion Charm