The Collection 2 Add-on for Call of Duty: Modern Warfare 3 has 6 achievements.
Destroy 6 helicopters in the "Kill Switch" Special Ops mission.
Complete the "Kill Switch" Special Ops mission on any difficulty.
Complete the "Kill Switch" Special Ops mission on Veteran difficulty.
Finish with your tank at full health in the "Iron Clad" Special Ops mission.
Complete the "Iron Clad" Special Ops mission on any difficulty.
Complete the "Iron Clad" Special Ops mission on Veteran difficulty.