Start the single player Campaign mode under the Regular or higher difficulty level. Complete the "Ghost Stories", "Brave New World", "No Man's Land", and "Struck Down" missions to unlock the "Extinction Mode" option at the main menu. Alternately, start Multiplayer Career mode and reach level 5.
Start Chapter 1, "Point Of Contact" and collect a sniper rifle. Find the "Gil's Lodge Motel" neon sign. Use the sniper rifle and shoot the letters "L", "O", and "L" (in order) in the word "Lodge" on that sign. The message "LOL" will appear in the center of the screen to confirm correct entry. For a short period of time, any alien shot will explode into golden alien stuffed dolls.
In Extinction, Shoot an 'L', then an 'O', then another 'L' on the "Gil's Lodge Motel" sign to start the Golden Aliens easter egg that lasts for ninety seconds & can be repeated.
| Achievement | How to unlock
|
|---|
- A Bridge To Somewhere (20 points)
| - Extend the bridge in Awakening in Regular or Hardcore difficulty.
|
- Awakening Completionist (30 points)
| - Complete all Challenges and escape Awakening in Regular or Hardcore difficulty.
|
| - Kill a Gargoyle with the Vanguard in Awakening in Regular or Hardcore difficulty.
|
- Egg-stra Awakening! (20 points)
| - Complete the Egg-Stra XP challenge and then scan an obelisk in the Invasion DLC package.
|
- Escaped Awakening (30 points)
| - Escape Awakening for the first time in Regular or Hardcore difficulty.
|
| - Kill 5 cryptids with the Ark attached to every compatible weapon in Awakening in Regular\Hardcore.
|
| - Find all of the Intel in Awakening.
|
- Targets Acquired (20 points)
| - Get past the first gate in Awakening in Regular or Hardcore difficulty.
|
- Twice The Fun (30 points)
| - Escape Awakening using two Relics in Regular or Hardcore difficulty.
|
| - Escape Awakening with each of the four classes in Regular or Hardcore difficulty.
|
| Achievement | How to unlock
|
|---|
| - Complete the Egg-Stra XP challenge and then destroy a hive in the Onslaught DLC package.
|
- Nightfall Completionist (30 points)
| - Complete all challenges and kill the Breeder in Nightfall.
|
| - Kill a Rhino with only a pistol in Nightfall.
|
- Phantom Exterminator (20 points)
| - Kill 5 Phantoms in one game.
|
- Pushing Ahead (20 points)
| - Gain access to the Compound area in Nightfall.
|
| - Kill the Breeder in less than 5 minutes in Nightfall.
|
- Survived Nightfall (20 points)
| - Kill the Breeder for the first time in Nightfall.
|
- Throttled Survival (30 points)
| - Kill the Breeder while using a Relic in Nightfall.
|
- Turnabout is Fair Play (20 points)
| - Kill 50 Cryptids with the Venom-X weapon in Nightfall.
|
- Undiscovered Truths (30 points)
| |
- Weapon Facility (20 points)
| - Gain access to the Facility in Nightfall.
|
| Achievement | How to unlock
|
|---|
- All or nothing (20 points)
| - Gather the troops. (Complete "All or Nothing" on any difficulty.)
|
| - Distract the Federation Fleet. (Complete "Atlas Falls" on any difficulty.)
|
| - Collect all 18 Rorke files.
|
- Birds of Prey (10 points)
| - Capture Rorke (Complete "Birds of Prey" on any difficulty.)
|
- Blimey O'Riley (10 points)
| - Pounce on 10 enemies whilst controlling Riley.
|
- Brave New World (10 points)
| - Rendez-vous in Fort Santa Monica. (Complete "Brave New World" on any difficulty.)
|
- Burn Baby Burn (25 points)
| - Destroy 80 fuel containers.
|
- Carbon Faceprint (10 points)
| - Catch the photocopier with your face.
|
| - Hack the system (Complete "Clockwork" on any difficulty.)
|
- Cog in the machine (35 points)
| - Kill 5 enemies without being detected before infiltrating Black Zone.
|
- David & Goliath (20 points)
| - Take down the LCS on the first go.
|
| - Drop 8 vehicles into ice holes.
|
- End of the Line (20 points)
| - Storm the factory (Complete "End of the Line" on any difficulty.)
|
- End of your rope (20 points)
| - Cut a grappling hook rope with an enemy on it.
|
- Federation Day (10 points)
| - Gather intel on Rorke. (Complete "Federation Day" on any difficulty.)
|
| - Take out 3 out of 3 helicopters with the remote missile.
|
| - Escape. (Complete "Ghost Stories" on any difficulty.)
|
- Go Ugly Early (10 points)
| |
| - Blow the pressure valves on your first attempt.
|
| - Defend LA. (Complete "Homecoming" on any difficulty.)
|
- Into the Deep (20 points)
| - Destroy the enemy ship (Complete "Into The Deep" on any difficulty.)
|
- It Came from Below! (10 points)
| - Kill 6 enemies with the knife while underwater in "Legends Never Die".
|
| - Destroy 21 slot machines.
|
- Jungle Ghosts (25 points)
| - Finish the mission without breaking stealth.
|
- Legends Never Die (10 points)
| - Hunt down Almagro. (Complete "Legends Never Die" on any difficulty.)
|
| - Take down both attack helicopters in Brave New World.
|
| - Commandeer the enemy space station. (Complete "Loki" on any difficulty.)
|
- No Man's Land (10 points)
| - Make it to San Diego. (Complete "No Man's Land" on any difficulty.)
|
- Piece of cake (100 points)
| - Storm the common room and kill everyone without taking damage on Veteran.
|
| - Reach round 20 in Safeguard.
|
| - Destroy the Federation's satellite array. (Complete "Severed Ties" on any difficulty.)
|
| - Plan your next move. (Complete "Sin City" on any difficulty.)
|
- Sleeping Beauty (10 points)
| - Kill sleeping enemy in face down rappel section
|
- Spatial Awareness (10 points)
| - Kill your first enemy in the Call of Duty Ghosts campaign.
|
| - Find Ajax. (Complete "Struck Down" on any difficulty.)
|
- The Ghost Killer (20 points)
| - Confront Rorke (Complete "The Ghost Killer" on any difficulty.)
|
| - Make it out alive (Complete "The Hunted" on any difficulty.)
|
- They look like ants (20 points)
| - Destroy all enemy ground targets and kill no allies with the rods.
|
- Tickets please (20 points)
| - Shoot the grapple guys off the side of the train.
|
| - Every shot with the remote sniper kills a person or vehicle.
|
- You've earned it (40 points)
| - Earn the mask. Finish the campaign on Veteran.
|
