A good User Interface is very important, especially in a fast paced action game. The information you need must be there, without taking your eyes off the action in the middle of the screen.
The left gauge shows you how much cash you carry around – too much, and you’ll have to find a way to get rid of it.
In the bottom right corner you see your current ammunition type (color + text) as well as your firing mode (e.g. fully automatic). The gauge and the number inside show you how many more rounds you have left.
GROSS will be completely controllable by any kind of controller (XBox, Playstation, etc.). All keybinds will be customizable. The keybind hints are usually hidden, but can be shown for a short time by pressing a helper key.