Complete the game on the hardest difficulty setting - Alien: Isolation (Xbox 360)
Complete the game on any difficulty setting - Alien: Isolation (Xbox 360)
Complete the eighteenth mission - Alien: Isolation (Xbox 360)
53/5,73840/1,0007/50
1,125/2,563585/1,00039/50
2,412/2,4121,550/1,55075/75