Easy completion on "O Cristo Redentor" Spec Ops mission
Follow this strategy to easily complete the "O Cristo Redentor" Special Ops mission under the Hardened or Veteran difficulty setting. For every ten defeated militia, two dogs will attack you. Usually one will appear from the high ground behind the fence while the other appears from the west. For every ten defeated men, run to the white truck near your starting point. Jumping on top of this truck will cause the dogs to freeze wherever they stand. Lure them by standing on the ground. When you hear their barking geting near, leap onto the truck when they are in the vicinity. Now that they are frozen, you can pick them off wherever they stand.