Looks like we now know all 18 Dark Ops challenges in Call of Duty: Black Ops 3. A Dark Ops challenge is technically classified until you complete said challenge in game. This can be pretty difficult if you don't know what you're doing. That is why we are going to talk about it all here today. Thanks to VoiD_Glitch and Marvel4 from the DenKirson forums for finding out the challenges. Reddit Link -.