With each new ending obtained, one of five costumes will be unlocked, depending on the ending achieved. There are, however, six costumes in all. A special costume can be obtained by inputting the Konami Code, a cheat code that appears in games developed and/or published by Konami.

• Big Rig Alex: Clothing similar to that worn by Travis Grady[silenthill.wikia.com]. This costume can be unlocked once you beat the game with the "Good" ending.
  
• Order Soldier Alex: The same mining uniform that Alex dons at the end of Church of the Holy Way[silenthill.wikia.com]. This costume can be unlocked after you beat the game with the "Drowning" ending.
  
• Bogeyman Alex: This costume can be unlocked after you beat the game with the "Bogeyman" ending.
  
• ER Alex: This costume is unlockable after you pass the game with the "Hospital" ending.
  
• Deputy Alex: This costume can be unlocked once you beat the game with the "U.F.O." ending
  
• Young Alex: This is the costume unlocked via the Konami Code.

The code is: UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, ESC, ENTER.
PS: Must be made using the arrows, not W,A,S,D.

The code must be entered in the game's title menu, without having pressed start.
After correctly entering the code, a sound should be heard indicating it has worked.