it's the trigger button on the bottom.
It means you must press the right "trigger" button which is the one that is right below the RB. The action of pressing this button simulates the pulling of a trigger.
The left trigger and right trigger are the buttons at the top of the controller that you pull with you fingers
Left Trigger... On Xbox360 it is, anyway.
National Socialism
You don't have to press any trigger. You should automatically receive the achievement.
You can skip the end credits if you hold the Start button, Select button, the "a" button, "b" button, "x" button, "y" button, and the right and left trigger
It is the left 'shoulder' button, L1.
The button on top of the left trigger
It's not really a button, but the only way to get out of your gangster life is by pulling the trigger
I am looking for the same answer. Have you found anything?
The default Aim Down Sights button on Xbox 360 and PS3 is the Left Trigger.