I do agree that 60 seconds is a tight window, but I am sure that once you figure everything out, it'll be easier to finish the game (Like, if you memorize the code, remember the positions, etc) As for an in-game tutorial, I am not entirely sure on how to implement it without spoiling the gameplay. :(
And I apologize for the vignette being too much on the eyes, I will work on fixing it. Thanks for playing my game!