So I am playing bo1 and do the mission where u escape with reznov. As you progress in the mission he talks about steps... Didn't realize how familiar they were till about step 4 any way as followed step 1: secure the keys ( reznov and you set up a fight and turn against the guards causing a riot) (as in origins (bo2) secure the keys sent collect the staffs. Step 2: ascend from darkness as you make your way along fighting with reznov you leave the tunnels to the outside concentration camp. (In origins zombies) retrieve your crystal from the crazy place. Step 3: Rain fire. In the mission you have a sling shot and are shooting the towers of the guards trying to prevent the prisoners from escaping. In (origins bo2 zombies) having you artillery strikes and pressing the button in the robot at the same time unlocking The hidden exscavtion site outside the map. Step 4: release the horde. In the mission you are freeing the prisons to escape after destroying the towers. In (origins bo2) releasing the horde was throwing maxis into the hole you uncovered and spawning the panzers.. Step 5: in the mission the last step is too (skewer the winged beast) meaning exscape on the chopper. In (origins) spawning a zombie blood and shooting the fire plane down again to retrieve maxis. Have no idea what there connections are except the time period is the same but found it pretty awesome.. Would love to hear your ideas on this awesome little coincidence!!! Thank you for reading my post!!