This is the simplest display setup. First make sure you are not in Big Picture Mode then open Aragami, then click or press space on the keyboard at the Main Menu. When you start or continue game, it will display your binded Keyboard & Mouse controls.

Before you do anything, put Steam into Big Picture Mode. Once in Big Picture Mode go to Settings and select controller configuration. Make sure that there is a check-mark next to the PS4 controller option and that you plug in your PS4 controller to the computer before opening any games. The controller should light up when detected. Now go to Aragami and select Play, when at the Main Menu start or continue campaign. Once you are loaded into the level you are going to unplug the PS4 controller and simply plug the controller back in, once Steam detects the controller press a button or move an analog stick around, it should now show you the PS4 controls for the game.

This is a simple setup, just open Big Picture Mode and connect your Steam controller (if you are using an Xbox controller go to Settings click Controller Configuration, make sure there is a check-make beside the Xbox controller option.) then Start Aragami. While at the Main Menu joystick around, the game will automatically register the controller type and you will see the Steam/Xbox controller controls.