ATTACKERS CHALLENGE Bygaga 03.03.2019 2019, Weekly Challenges Reward Comments 29/01/2019 Road to S.I. chalenge overview Rainbow Six Siege – ATTACKERS CHALLENGE Pave the way on the Road to Six Invitational with the Ubisoft Club Challenge. Destroy 15 defender gadgets while attacking in the Event playlist this weekend to obtain a 2019 Collection Pack. 2019 Collection Pack Road to S.I. Collection