BLACK OP MASTER: 100G

Complete the campaign on Hardened or Veteran difficulty.

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You have to complete the following missions on either the Hardened or Veteran difficulty.

Operation 40

• Vorkuta
  
• U.S.D.D
  
• Executive Order
  
• S.O.G.
  
• The Defector
  
• Numbers
  
• Project Nova
  
• Victor Charlie
  
• Crash Site
  
• WMD
  
• Payback
  
• Rebirth
  
• Revelations
  
• Redemption
  

Some things that are useful when playing on these difficulties are listening to your teammates, and always try to be covered. Always be reloaded, use flashbangs in situations that are harder than others. These come in handy when you are in these difficulties.