Cryptids are enemies that appear in the first person shooter, Call of Duty Ghosts Extinction mode, however appears on the DLC Multiplayer map, Unearthed, as a killstreak earned by completing a field order.
They are the original inhabitants of earth existing before there was alot of oxygen and when the surface was coverd in volcanoes.
Crypiptic biology varies by type, however, all are light to heavily armored, with certain soft tissue that noticeably glows.
The objective of extinction is to drill hives, basically the primary method of spawning cryptids. Hives are powered by geothermal heat, and have rapid cell separation, meaning they are nearly impossible to destroy without a thermal drill.