How do I unlock rank 4 parts for the Rick Dias?
Unlock and clear the “A.E.U.G.’s Hope” Extra Mission. To unlock the mission, you must have cleared both “A Veteran’s Deed” Free Missions, as well as have shot down 3000 or more units while piloting the Rick Dias (combined total for all pilots). The “A Veteran’s Deed 1” mission is unlocked after you assemble the Rick Dias, and the “A Veteran’s Deed 2” mission is unlocked after you clear “A Veteran’s Deed 1” and tally 1000 or more units shot down while piloting the Rick Dias (combined total for all pilots). Both “A Veteran’s Deed” missions and the “A.E.U.G.’s Hope” mission require you to pilot the Rick Dias only.
