So i was just chilling looking up videos on how to get the ghost camo, when i ended up finding something out myself. There is a clip that says "unlock all infection" by "c isnt sharp" or "XBOX360LSBEST". When you get this clip you will have everything unlocked including all calling cards so if you wanted the ghost camo there you go! (Note: if you get off of bo2 you will go back to your same rank + if you change the calling card you wont have it anymore unless you watch the clip again.) Thank you!