A BOX FULL OF SHARP OBJECTS
Use every weapon in the game at least once

Super easy achievement, you just need to get a kill with every weapon/melee. I will do this for list:

Guns List:

• Dual Shotgun
  
• Pump Shotgun
  
  
• Machine Gun / Silence SMG
  
• MP5 - Used by The Bear and The Russian
  
• Uzi
  
  
• AK47
  
• M4A4
  
  
• 50 Cal Sinper
  
• Heavy Machine Gun
  
• Flamethrower
  
  
• Pistol
  
• Revolver - Only can be obtain from cops
  
• Silence Pistol
  
  
• Nitro-grenade - Chapter 15th Scene - Withdrawal

Melee List:

• Baseball Bat
  
• Chainsaw *You need to use Alex (Duck Mask)*
  
• Fireaxe
  
• Glass Shard *Chapter 20th scene - Release*
  
• Hammer
  
• Katana
  
• Small Knife
  
• Lead Pipe
  
• Toothbrush Shank
  
• Machete
  
• Police Baton
  
• Taser
  
• Skateboard

Hum pretty sure this is the all list, in case i miss any, comment bellow!