How do I unlock rank 4 parts for the Gyan?
Unlock and clear the “Don Quixote” Extra Mission and read the terminal message received immediately afterwards. To unlock the mission, you must max out your relationship with M’Quve, clear M’Quve’s Story Mode missions without ever getting a Game Over (i.e. don’t save the game if you die during any of the Story Missions), and shoot down 3000 or more enemy units while playing as M’Quve.
