THE GETAWAY  

Free Roam mode 
Beat all regular missions, this mode allows you to go around London without 
having to do any missions. 

Gas tank kills
Shoot a gas tank when an enemy is nearby to easily kill them. 

DC Carter moves 
Knock out hostage: With a gun, press X to get a hostage then press Square. 
Kick hostage: While unarmed, X to get a hostage then press Square. 

Mark Hammond moves 
Shoot hostage: With a gun, press X to get a hostage, then press Square. Break 
hostage's neck: While unarmed, press X to get a hostage, then press Square.