In the Mission, "One Shot, One Kill," you can see the Modern Warfare 3 villain Makarov in one of the cars. If you shoot Makarov after you shoot Zakhaev, you can unlock the achievement "Time Paradox" and complete a secret objective where you have to change the future.

The game can only be purchased in the Call Of Duty Infinite Warfare Legacy Edition.

It will be released as a standalone game on disc and digital editions on June 29th on PS4 first