There are 6 remaining unknown dark ops:
8: A skeleton in a lab, showing 4 Relics (Vials, Sphere, Stone, Dragon)
10 (animated): A crane game where all AOTD Relics are shown and the Dragon is picked up then dropped
12 (animated): Teddy bear + rampage induce. Teddy goes crazy
18: Zombie karate-kicking a dragon
20: Something definitely Dead Ops related
26: The Astra Malorum planet skull laughing in space. Either overlooking the map (which shouldn’t be possible since the skull is the map) or overlooking the play space in mars
Just let me know your thoughts and theories because I will test out my own later today and wanna see if any work 🙂
FYI, the full known list is in the link below: