Tip: Make a party with two of the required summon/characters + a fast group damage dealer and you can clear the character usage missions while also farming the required monsters.
Medusa x 15
Story Act 3, Chapter 1 Pt. 1 – you’ve probably completed this objective by grinding the co-op fight already!
Scorpion x20
Relm’s Lost Chapter: A Thousand Words Pt. 6 (Normal difficulty) has 5 Scorpions in 3 waves, completing the mission in 4 fights.
Thanks
To the DFFOO “Monster Hunter Guide“, an initiative to list all monster locations in the game (maintained by Marvan09).
To @xcaliblur, @mzpro2, @infinitus and @Lumine who also contributed tips for these stages in our public DFFOO Telegram group, which can be found here: