How to get the Trigger Discipline Achievement/Trophy
To get the Trigger Discipline achievement/trophy you must not injure any civilians in 'Piccadilly'. This is done in Mission 2: Piccadilly and you can make it easier by playing on the Recruit difficulty setting. It is recommended that you only use your pistol, and you advance slowly shooting only one bullet at a time when you aim at an enemy. If you stay to your left and do not harm any civilians as you make your way to the 'stuck door' caused by the suicide bomber you will end the mission and unlock the achievement/trophy.
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