Tip: Make a party with two of the required characters + a fast group damage dealer and you can clear the character usage missions while also farming the required monsters.
Scorpion x20
Note: Alphinaud’s Lost Chapter has several Scorpion fights, so make sure to finish it first if you haven’t already.
Relm’s Lost Chapter: A Thousand Words Pt. 6 (Normal difficulty) has 5 Scorpions in 3 waves. You can complete the mission in 4 fights.
Alternative:
Events -> Cycle Quests -> Pursuit of Yellow Crystals Pt. 6 has 3 Scorpions in 3 waves. You will need more fights than with the first option, but gain more XP/gil/crystals in the process.
(Use a key to unlock this level for 30 minutes if needed – and thanks ddrox for the tip!)
Cray Claw x40
Note: Keiss’ event will have Cray Claws to be fought in the co-op, which is a much faster option than the stage below.
Story Act 2 Chapter 6: 6-35 Shell in the Ruins has 1 Cray Claw in 3 waves, completing this objective in a whooping 40 fights.
Thanks
To the DFFOO “Monster Hunter Guide“, an initiative to list all monster locations in the game (maintained by Marvan09).
To @xcaliblur, @mzpro2 and @infinitus who also contributed tips for these stages in our public DFFOO Telegram group, which can be found here: