Hint - Unlockables By Rank
Get an A rank on any offline story mission for an unlockable part.
Get an S Rank in any offline story mission for either more parts or
the S rank award. Note that a Hound that mixes RTs
(soldier-sniper-defend..
お客様の訪問には、システムの限界を超え、この資料の内容を隠してきた。