Extinction

Extinction or Alien Extinction is a game mode featured in Call of Duty: Ghosts. In the vanilla game, the mode was listed as "Extinction", however it has since been renamed in the menus to "Alien Extinction". The game mode features up to four players fighting Cryptids (enemies similar to aliens) in outbreak sites where the Cryptids have overrun the area. Players have objectives, which are to destroy cryptid Hives and complete Challenges. Players also earn money by killing cryptids, destroying Hives, or searching Search Piles. The money earned from these can be used to purchase additional weaponry placed throughout the map (similar to Zombies) and use abilities selected pre-game. In addition, players are able to customize their player, much like multiplayer mode.

The Traps that can be used against the cryptids are the electrical fences and fire traps. The traps cost money to set and only last for a short period of time. The traps do not have a cooldown time and can be used as often as the player wants provided they have the money needed.

There are four classes for the player to choose from, Weapon Specialist, Tank, Engineer, and Medic. For each class there is a specific set of unique abilities/perks that the player will be able to utilize for themselves or their team. There are also loadout slots that players can choose different options from including: Pistol, Ammo Type, Team Support, Strike Package and Equalizer, the player also passively has On the Go and Resilience. Once the player completes level thirty, they will automatically prestige, allowing them to equip an additional Relic, once per prestige. The mode is not infinite round based like Zombies, but has an ending and is much more linear.

If a player receives enough damage they will fall to the ground (frequently referred to as "down", due to its similarity to the same action in Zombies). During this period of time the player still has the option of using their secondary weapon. However, another teammate must revive the fallen teammate or they will bleed out and die. When a player dies they will spectate another player and a dog tag will appear where their body was located. Nevertheless, it is still possible for another player to revive the dead player at their dog tag. In solo, at the start of the game, the player can be downed once and revive themselves after a couple of seconds, but next time they will directly die. However, when a barrier hive is destroyed or the player proceeds to the next section of the map, the player receives an extra chance; this means that the player can be downed a maximum of three times in a single game before dying.

Money System
The maximum amount of money a player can carry is $6000 ($3000 with the Smaller Wallet Relic, $8000 with the +4 Engineer upgrade or $4000 with both). The player will receive money after a Hive is destroyed, based on their score earned while it was being destroyed. A supply drop of $3000 ($2250 with Smaller Wallet Relic) will be dropped after a Barrier Hive is destroyed. Also, a $2,000 supply drop will spawn in after the first fight with the Breeder in Nightfall.

All aliens killed in the cabin area of Point of Contact will have an additional 1.3x multiplier. All aliens killed in DLC maps have an additional 0.5x multiplier.

Positive multipliers:
 * 1.5x: Killed with a critical hit
 * 1.5x: Killed with melee

Negative multipliers:
 * 0.75x: Smaller Wallet Relic
 * 0.5x: Killed with a hit to the armor (Does not apply with Armor Piercing Ammo)
 * 0.5x: Assisted kill

Maps

 * Point of Contact
 * Nightfall
 * Mayday
 * Awakening

Cryptids

 * Scout
 * Hunter
 * Scorpion
 * Seeker
 * Rhino
 * Leper
 * Phantom
 * Breeder
 * Seeder
 * Kraken
 * Gargoyle
 * Bomber
 * Mammoth
 * Ancestor

Ranks
In Extinction, there are 15 Prestiges. Originally there were 5 prestiges but with the release of every map pack, 5 new prestiges were added respectively. The player must reach and complete rank 30, which will earn the player the next prestige level and reset them back to rank 1. At prestige 15, upon completing rank 30, the player will reach rank 31 to show that they have earn the maximum amount of Experience.
 * Rank 1 - Weapon Specialist, P226, Normal Ammo, Team Explosives, I.M.S., Portable Turret
 * Rank 2 - Stun Ammo
 * Rank 3 - Tank, Multiplayer Background
 * Rank 4 - Feral Instincts
 * Rank 5 - Engineer
 * Rank 6 - Grenade Turret
 * Rank 7 - .44 Magnum
 * Rank 8 - Armor
 * Rank 9 - Mortar Strike
 * Rank 10 - Medic
 * Rank 11 - Multiplayer Background
 * Rank 12 - Incendiary Ammo
 * Rank 13 - M9A1
 * Rank 14 - Team Booster
 * Rank 15 - Crowd Control
 * Rank 16 - MP-443 Grach, Multiplayer Background
 * Rank 17 - Random Supplies
 * Rank 18 - Trinity Rocket, MAAWS Rocket
 * Rank 19 - Multiplayer Patch
 * Rank 20 - Explosive Ammo, Multiplayer Background
 * Rank 21 - Multiplayer Background
 * Rank 22 - Sentry Gun
 * Rank 23 - MK32 Launcher
 * Rank 24 - Multiplayer Patch
 * Rank 25 - Armor-Piercing Ammo
 * Rank 26 - Multiplayer Background
 * Rank 27 - Multiplayer Patch
 * Rank 28 - Vulture
 * Rank 29 - Death Machine
 * Prestige 1, Rank 1 - 1st Relic Slot
 * Prestige 2, Rank 1 - 2nd Relic Slot
 * Prestige 3, Rank 1 - 3rd Relic Slot
 * Prestige 4, Rank 1 - 4th Relic Slot
 * Prestige 5, Rank 1 - 5th Relic Slot, Multiplayer Patch

Armory
As of April 3, 2014, there is an upgrade system, using "Teeth" to purchase upgrades in the loadout menu, these upgrades will carry through each game.

Spend Teeth in the armory to purchase upgrades for classes and equipment. Earn Teeth by Completing Extinction missions. Bonus Teeth are awarded for using relics, playing Hardcore mode, or helping other players complete a mission for the first time.

Teeth are also earned by killing six hundred aliens, achieving ranks 2, 6, 11 and 21 for the first time and prestiging.

There is also a 'Bonus Pool' which contains three Teeth that can be obtained by completing the first area of a map. The bonus pool refills every seven days.

Upgrades:

Difficulty
An update for the mode included several new difficulty mode for the game to be played at.

Casual: The number of Cryptids that appear are reduced by 50%, their health is also reduced by 50% (Scouts can now be killed with a single melee attack; Rhinos only take up to a single LMG magazine to be taken down). Cryptids are not as aggressive as before the patch, players will take less damage as a result. Players also spend less money by having to use their abilities less often (the prices are still the same, it's the frequency of using them to resupply/re-armor that allows players a full bank most of the time in this difficulty). Playing on Casual, however, does not count towards leaderboard placings; scores won't be posted, escapes will not count. But, the number of Cryptids the players kill will still count towards the 10,000-weapon-kill operation and still earn the Multiplayer patch. Additionally, escaping while using a Relic will also still count towards the background challenges. A recent update made a casual playslist online, with rotating maps.

Regular: This difficulty is essentially the way the mode has been played before the patch.

Hardcore: The crosshairs on the player's HUD is removed, the Cryptids are more aggressive and skill points are not earned for destroying hives. Ricochet friendly fire is also turned on. Substantially more difficult enemies appear to spawn much earlier on. Players tend to be faced with Hunters on the very first hive. Specifically on Point of Contact, within the first area, players come face to face with large numbers of Meteors/Seekers. A recent update made on online hardcore playlist, with alternating maps.

Point of Contact Achievements/Trophies

 * No Man Left (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Escape with all four players in Regular or Hardcore difficulty.


 * Sprinter (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Reach the exfil chopper with 1 minute and 30 seconds or more remaining on the clock in Regular or Hardcore difficulty.


 * Made it Out Alive (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Escape 1st time in Regular or Hardcore difficulty.


 * Completionist (25 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Complete all Extinction challenges and escape.


 * Cabin Fever (10 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Make it to the cabin.


 * City Dweller (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Make it to the city.


 * Any Means necessary (40 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Get 50 kills with the electric fence and fire traps in a single game.


 * Trash Picker (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Scavenge 40 items in a single game.


 * Throttled Escape (10 Gamerscore.png/ Gold Trophy Gold Trophy PS3 icon.png) - Escape using a relic.

Nightfall Achievements/Trophies

 * Pushing Ahead (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Gain access to the Compound area in Nightfall.


 * Weapon Facility (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Gain access to the Facility in Nightfall.


 * Survived Nightfall (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Kill the Breeder for the first time in Nightfall.


 * Speed Slayer (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Kill the Breeder in less than 5 minutes in Nightfall.


 * Turnabout is Fair Play (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Kill 50 Cryptids with the Venom-X weapon in Nightfall.


 * Nightfall Completionist (30 Gamerscore.png/ Silver Trophy Silver Trophy PS3 icon.png) - Complete all challenges and kill the Breeder in Nightfall.


 * Throttled Survival (30 Gamerscore.png/ Silver Trophy  Silver Trophy PS3 icon.png) - Kill the Breeder while using a Relic in Nightfall.


 * Phantom Exterminator  (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Kill 5 Phantoms in one game.


 * Pea Shooter  (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Kill a Rhino with only a pistol in Nightfall.


 * Undiscovered Truths (30 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Find all the intel hidden in Nightfall.

Mayday Achievements/Trophies

 * The Belly of the Beast (20 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Reach the cargo area in Mayday on Regular or Hardcore difficulty.


 * Come Up For Air (30 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Reach the top deck in Mayday on Regular or Hardcore difficulty.


 * Survived Mayday (30 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Kill the Kraken for the first time in Mayday on Regular or Hardcore difficulty.


 * Upping the Ante (30 Gamerscore.png/ Silver Trophy Silver Trophy PS3 icon.png) - Kill the Kraken using a Relic in Mayday on Regular or Hardcore difficulty.


 * Mayday Completionist (30 Gamerscore.png/ Silver Trophy Silver Trophy PS3 icon.png) - Complete all Challenges and kill the Kraken in Mayday on Regular or Hardcore difficulty.


 * Inquisitive Mind (30 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Find all of the Intel in Mayday.


 * Deforestation (30 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Kill 15 Seeder Turrets in one game in Mayday on Regular or Hardcore difficulty.


 * Big Game Trapper (30 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Use a hypno trap to turn a Rhino friendly in Mayday on Regular or Hardcore difficulty.


 * Egg-stra Devastation! (30 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Complete the Egg-Stra XP challenge and then destroy a hive in the Devastation DLC package.


 * The Architect (30 Gamerscore.png/ Bronze Trophy Bronze Trophy PS3 icon.png) - Successfully build all of the Schematics in Mayday on Regular or Hardcore difficulty.

Awakening Achievements/Trophies

 * Targets Acquired  (20 Gamerscore.png/ Bronze Trophy Bronze_Trophy_PS3_icon.png) - Past the first Gate in Regular or Hardcore difficulty.
 * Dog Fight  (20 Gamerscore.png/ Bronze Trophy Bronze_Trophy_PS3_icon.png) - Kill a Gargoyle with the Vanguard on Regular or Hardcore difficulty.
 * Spelunker  (20 Gamerscore.png/ Bronze Trophy Bronze_Trophy_PS3_icon.png) - Find all Intel in Awakening.
 * A Bridge To Somewhere  (20 Gamerscore.png/ Bronze Trophy Bronze_Trophy_PS3_icon.png) -  Extend the bridge on Regular or Hardcore difficulty.
 * Like a Glove  (30 Gamerscore.png/ Bronze Trophy Bronze_Trophy_PS3_icon.png) - Kill five Cryptids with the Ark attached to every compatible weapon on Regular or Hardcore difficulty.
 * Egg-stra Awakening!  (30 Gamerscore.png/ Bronze Trophy Bronze_Trophy_PS3_icon.png) - Complete the Egg-Stra XP challenge and then scan an obelisk.
 * Escaped Awakening  (30 Gamerscore.png/ Bronze Trophy Bronze_Trophy_PS3_icon.png) - Escape for the first time in Regular or Hardcore difficulty.
 * Awakening Completionist  (30 Gamerscore.png/ Bronze Trophy Bronze_Trophy_PS3_icon.png) - Complete all Challenges and escape on Regular or Hardcore difficulty.
 * Twice the Fun (30 Gamerscore.png/ Bronze Trophy Bronze_Trophy_PS3_icon.png) - Escape using two Relics on Regular or Hardcore difficulty.
 * Well Rounded  (30 Gamerscore.png/ Bronze Trophy Bronze_Trophy_PS3_icon.png) - Escape Awakening four times using the different classes, theMedic, Tank, Weapon Specialist, and Engineer.

Story
Main Article: Extinction/Story