Complete the following achievements to unlock Xbox Live Gamerscore points.
Achievement
How to unlock
Alchemilla's Finest ( 10 points )
Defeated one Nurse.
Clear the Air ( 10 points )
Defeated one Smog.
Creeper Reaper ( 10 points )
Defeated one Swarm.
Eddie's Legacy ( 10 points )
Defeated one Feral.
Health Junkie ( 50 points )
Found all serums.
Josh's Gallery ( 50 points )
Found all photos.
Kaufmann's Handiwork ( 10 points )
Found one serum.
Lock 'n' Load ( 25 points )
Found rifle.
Lurk No More ( 10 points )
Defeated one Lurker.
Nursery Rhymes ( 50 points )
Found all the children's drawings.
Out of Order ( 10 points )
Defeated one Order member.
Shades of James ( 20 points )
Defeated one Siam.
Sightseeing ( 10 points )
Found one photo.
Split Personality ( 10 points )
Defeated one Schism.
The Old Gods... Haven't left this place ( 100 points )
Complete game on hard difficulty.
To The Point ( 10 points )
Defeated one Needler.
Circular saw weapon
Successfully complete the game. Start a new game session with a cleared saved game file and search the Shepherd family's garage to find the circular saw.
Easy "The Old Gods..." achievement
View The "UFO" ending under the Normal difficulty to unlock the laser pistol. After saving the game, start it again under the Hard difficulty setting. When you finally reach the house and go into Alex's/Josh's room, you will see the laser pistol next to the bed. With unlimited ammunition and extreme power, the rest of the game will be very easy.
Endings
Here is what Alex has to do to unlock the endings in the game.
Ending
How to Unlock
"Bogeyman" Ending
Don't forgive your father, don't kill your mother, and don't save Wheeler.
"Drowning" Ending
Don't forgive your father, but do kill your mother.
"Good" Ending
Forgive your father and kill your mother out of mercy.
"Hospital" Ending
Forgive your father and don't kill your mother.
"UFO" Ending
Similiar to the Bogeyman ending. Don't forgive your father, don't kill your mother, BUT do save Wheeler.
Note: This code contains spoilers.
Extra Costumes
Unlock these costumes for Alex after beating these certain endings.
Costume
How to Unlock
Bogeyman a.k.a. Pyramid Head Helmet
Unlocked by getting the "Bogeyman" Ending
Deputy Alex
Unlocked by getting the "UFO" Ending
Order Soldier Outfit
Unlocked by getting the "Drowning" Ending
Orderly Alex
Unlocked by getting the "Hospital" Ending
Trucker Alex
Unlocked by getting the "Good" Ending
Laser pistol
Successfully complete the game with the UFO ending. Start a new game session with a cleared saved game file and look on top of the footlocker in Joshua's room.
Room 301
After Travis attacks Ellie with a chainsaw, search the walls where you jumped an iron fence. You will find the key to Room 301. The room is in the underground area. Inside, you can recover all the weapons you have obtained, as well as get a med pack, health drink, and ammunition.
Secret Achievements
Complete the following achievements to unlock Xbox Live Gamerscore points.
Achievement
How to unlock
Angela's Choice ( 50 points )
Alex does not forgive his father.
Blood Donor ( 20 points )
Defeated Scarlet.
Catch Your Breath ( 20 points )
Defeated Asphyxia.
Compassion ( 50 points )
Alex could not end his mother's suffering.
Forgiveness ( 50 points )
Alex forgives his father.
Head Above Water ( 20 points )
Defeated Amnion.
In Water ( 50 points )
Achieved Ending 2.
Intensive Care ( 50 points )
Achieved Ending 4.
Judgement ( 50 points )
Achieved Ending 3.
Mercy ( 50 points )
Alex ended his mother's suffering.
No Dogs Allowed ( 50 points )
Achieved Ending 5.
Now About Those Drinks ( 25 points )
Saved Wheeler.
Rising Tension ( 25 points )
Found Circular Saw.
Science Fiction ( 25 points )
Found Laser Pistol.
Six Feet Under ( 20 points )
Defeated Sepulcher.
Smile ( 50 points )
Achieved Ending 1.
Stuck in corner
It is possible to become stuck in a corner that contains two nearby objects. You can become trapped in the triangular space between the objects and the corner. To exit from such a location, take out your gun and walk forward or forward diagonally.
Young Alex Costume
At the press start screen if you input the code Up, Up, Down, Down, Left, Right, Left, Right, Circle, you will unlock the young Alex Costume.
Achievements...