Rubik's Headache

Rubik's Headache is an Achievement in the category The Memories We Share.
To unlock this achievement, complete 15 new Hexanexus challenges that are spawned after completing Hasta la vista, Hexanexus!. After obtaining A Metaphor of Caves, read the text message from the Hex Club representative.
==Gameplay Notes==
* As of 2023/05/01, there is a bug that makes you unable to do the new 15 challenges if you solve the puzzle before talking to the NPC.
==Other Languages==
==Change History==