First Pistol

• 1). Go to Level 2: Derelict apartment block.
  
  
• 2). Go to the very top until you see a machine, two keys and a door.
  
  
• 3). Pull the lever on the machine to make the elevator work.
  
  
• 4). Go into the elevator and select #2 to go to Floor #2.
  
  
• 5). Jump over the big gap and go through the door.
  
  
• 6). Open the closet to get the first pistol.
  
  

Second Pistol

• 1). Go to Level 19: Van Croy's apartment.
  
  
• 2). Attack The Cleaner, who will blast a hole through the wall.
  
  
• 3). Repeat Step 1 until the The Cleaner has made a large hole in the wall, revealing the second pistol.