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.
Gargoyle x25
Kimahri’s Lost Chapter: Unbreakable Pride Quick Encounter Pt.3 (Normal difficulty) has 2 Gargoyles in 1 wave, completing the mission in 13 fights.
Red Bat Types x30
Barret’s Lost Chapter: Right Arm With a Mission Pt.11 (Normal difficulty) has 6 Red Bat types in 4 waves, completing the mission in 5 fights. The moths found in the Heartless Gaze event were also considered Red Bat types, so you probably got this objective while clearing those fights.
Golden Cactuar x15
Freely farmable to your heart’s content.
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: