I liked the story!
Some suggestions would be to add some more sounds to give feedback to the player about what they're doing. When going through the forest in search of the location for the coordinates, for example, some footsteps would've helped selling the idea that the player is moving.
While the controls may seem simple, a screen with the controls in you game would be appreciated. I enjoyed the gag about missclicking the loading button on the main menu, but that slot would've been better for a control screen, in my opinion. I find it's always best not to assume people will know how to move around and so stuff on a game and even though it takes a couple of seconds to figure it out, it does disconnect momentarily.