Functional
Does the player move correctly forward, backward, left, right?
Does the player rotate according to the mouse movement?
Can you see the coordinates of the player position on a corner?
As you are moving through the map, are the coordinates on the widget changing?
Is the game on the background paused? (check on the Player blueprint if the game pause is set)
Does the Graphics Settings menu contain a “resolution scale” slider and a dropdown menu list with a minimum of 3 different resolutions?
Are the Shadow Quality, Post Process, Texture Quality, Effects Quality and Foliage Quality settings present in the Graphics Settings menu?
Do all previous settings contain four choices ("LOW", "MEDIUM", "HIGH" and "EPIC")
Did the widget fit the screen in whatever resolution the game was set on?
Was the 25 string variables limit respected?
Bonus
Was there a resolution confirmation button anytime when changing resolution?
Was the “On Release” attribute of the buttons used instead of the "On Pressed"?
Are the default screen resolution automatically set to get the best computer performance?