Left Shoulder Button (LB) = A button. Attack Button = Toggle. Xbox 360 about 1 hour
combined playtime You have an alternative button for picking up guns now (LB/Left-shoulder-button). The attack button is now a toggle so you don't have to hold it down anymore, although you will need to double press it when your ammo runs out in order to start firing again.
Gamepad Inputs
Aiming Shoots Xbox One about 2 hours
combined playtime
Gamepad Inputs