I gather that most of the people who are going to own Call of Duty: Ghosts - Devastation
are solely in it for the competitive multiplayer. Granted, Extinction is still fun and there's some new content on that front, but I'll get into that later. These expansions usually sell on the merits of being able to kill people in different environments than everyone is used to, and will likely continue to do so regardless of how good the maps actually are. Here, they're par for the course. Two are great, and the others are just okay.
We'll start with the elephant in the room. Players seemed to receive the whole Michael Myers thing rather well in Onslaught, so Infinity Ward attempts to replicate that success in Ruins, a jungle environment that mixes the natural world with the supernatural. The Mayan imagery and natural dangers are the obvious threat; the volcano far off in the distance can be triggered with a Field Order Reward. The other is not so organic; you become the Predator. Aesthetic differences aside, the benefits are similar to those obtained by being the Halloween psychopath. But, of course, you can bleed, and therefore you can be killed. Ruins is one of the two greats in the pack.
The other star map is Unearthed, a map that delves into the Extinction sidestory a bit. This craggy wasteland is what remains of an excavation site; naturally, the Cryptids are involved. They tie into the primary Field Order Reward for this map; you can summon three of the little exploding Cryptids to home in on approaching enemies.
Collision is as bog-standard as Call of Duty maps go. You've got a container ship that has somehow found its way into a bridge. So naturally, the opportunities for cover and verticality are exactly what you'd expect: plentiful and slight. But in terms of originality, it's a total flop. Even the Field Order Reward (a double strafe from the greatly-feared Warthog) lacks excitement for all except the individual unleashing it.
Finally, we have Behemoth, a hazardous map loaded with chokepoints. If you find yourself in a team that lacks skill, this is not the place to be; Field Order Rewards allow achieving players the opportunity to climb into the gunner seat of a chopper and just waste everyone on the screen until someone finally gets wise.