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Secret tapes
Find and scan all five databank items in a level to unlock the secret for that
level. The final secret of the game is unlocked when all prior secrets have been
found.
Secret Rooms
Level 2: Shoot all the highest windows in the far wall in the hangar. When you
are in the truck, shoot all yellow barrels, and you will discover another secret
room.
Level 4: When you are driving on the STAAR jeep, shoot every yellow box.
Level 5: Shoot the sign which shows the words General Weatherby on the second
door right away when this door opens.
Level 7: Shoot all yellow barrels in the first area where the four purple
zombies are throwing barrels.
The End
Good End: Shoot all the panels of the mothership
Bad End: If you let the mothership escape
Infrared
If you start the game, only shoot the first three STAAR team members. If you do
this right, you will have an infrared sight.
Hard difficulty
Successfully complete campaign mode under the medium difficulty setting.
Gray Alien in multi-player mode
Successfully complete campaign mode under the hard difficulty setting.
Life Or Death: Alien grenade upgrade
Search the dead soldier in one of the elevators where Cole starts the level to
find a small key. Use it to open the small lockers in the first power conduit
pit to find a databank item. It will upgrade the alien grenade so that it will
track targets.
Moon Landing Conspiracy
When you reach "Lies of the Past: Checkpoint 4", you will ascend in an elevator.
Exiting the elevator, you will see a replica of the Moon's surface, a model of
the U.S. space suit, and a shuttle the United States used to reach the Moon.
This is in reference to the Moon Landing Conspiracy, claiming that the U.S.
never actually reached the Moon, and faked the landing to beat the Russians in
the space race. The conspiracy was heavily debated, but ultimately rejected by
the majority of opinions. Today, only a few people still claim the Moon landing
was a hoax.
Defeating Grays
To defeat Grays that use shields, mutate and fire parasites at them. It will
bring down the shields faster than any other weapon in the game.
Defeating the Super Beast
When fighting the Super Beast, rather than running straight at him, run around
in a circle. When he gets near an explosive barrel, shoot it. It does more
damage then the BBG. Watch out for his plasma shooting arm as well. When you
finish, Edgar will talk to you, and you get to see him.
Arcade cabinet
In the earlier stages of the game, there are a few cabinets of the original Area
51 arcade game, complete with red and blue light-guns.
Interesting scans
During the training levels, scan everyone that you can. You will find some
interesting equipment of the MPs, including adult diapers and condoms. Hold
[Down] until your scanner stops moving and you appear to be looking at your
feet. You can now scan yourself and see information about Cole.
Find and scan all five databank items in a level to unlock the secret for that
level. The final secret of the game is unlocked when all prior secrets have been
found.
Secret Rooms
Level 2: Shoot all the highest windows in the far wall in the hangar. When you
are in the truck, shoot all yellow barrels, and you will discover another secret
room.
Level 4: When you are driving on the STAAR jeep, shoot every yellow box.
Level 5: Shoot the sign which shows the words General Weatherby on the second
door right away when this door opens.
Level 7: Shoot all yellow barrels in the first area where the four purple
zombies are throwing barrels.
The End
Good End: Shoot all the panels of the mothership
Bad End: If you let the mothership escape
Infrared
If you start the game, only shoot the first three STAAR team members. If you do
this right, you will have an infrared sight.
Hard difficulty
Successfully complete campaign mode under the medium difficulty setting.
Gray Alien in multi-player mode
Successfully complete campaign mode under the hard difficulty setting.
Life Or Death: Alien grenade upgrade
Search the dead soldier in one of the elevators where Cole starts the level to
find a small key. Use it to open the small lockers in the first power conduit
pit to find a databank item. It will upgrade the alien grenade so that it will
track targets.
Moon Landing Conspiracy
When you reach "Lies of the Past: Checkpoint 4", you will ascend in an elevator.
Exiting the elevator, you will see a replica of the Moon's surface, a model of
the U.S. space suit, and a shuttle the United States used to reach the Moon.
This is in reference to the Moon Landing Conspiracy, claiming that the U.S.
never actually reached the Moon, and faked the landing to beat the Russians in
the space race. The conspiracy was heavily debated, but ultimately rejected by
the majority of opinions. Today, only a few people still claim the Moon landing
was a hoax.
Defeating Grays
To defeat Grays that use shields, mutate and fire parasites at them. It will
bring down the shields faster than any other weapon in the game.
Defeating the Super Beast
When fighting the Super Beast, rather than running straight at him, run around
in a circle. When he gets near an explosive barrel, shoot it. It does more
damage then the BBG. Watch out for his plasma shooting arm as well. When you
finish, Edgar will talk to you, and you get to see him.
Arcade cabinet
In the earlier stages of the game, there are a few cabinets of the original Area
51 arcade game, complete with red and blue light-guns.
Interesting scans
During the training levels, scan everyone that you can. You will find some
interesting equipment of the MPs, including adult diapers and condoms. Hold
[Down] until your scanner stops moving and you appear to be looking at your
feet. You can now scan yourself and see information about Cole.