This can be unlocked from the beginning.
Once the game has loaded and you are viewing list of the main games press
which takes you to the Museum.
Once in the Museum press
to switch to the art of the game, now press
on the Box Art to open it then press
to go back to the art menu and do the same for the Case Art.
Once you have viewed the Box and Case art for a game you can press the
button to switch games and do the same for the next game, if you start at Alex Kidd
each time you will get the achievement once you view the Box and Case art for Zaxxon
This takes no time at all.
Here's a video demo (Skip to 0:44 for the beginning)Credit to jack1oo for the video