Here is the full list of all 14 SENRAN KAGURA Reflexions achievements.
Cleared Asuka's Present arc.
Cleared Asuka's Sister arc.
Cleared Asuka's Classmate arc.
Cleared Asuka's New Idol arc.
Cleared Asuka's Tutor arc.
Cleared Asuka's Woman Warrior arc.
Cleared Asuka's Club Junior arc.
Performed the Ultimate Course in Glorious Reflexology.
Performed the Luxury Course in Glorious Reflexology.
Performed the Royal Course in Glorious Reflexology.
Performed the Fantastic Course in Glorious Reflexology.
Changed a character's outfit.
Obtained all achievements.
Gathered all of Asuka's Heart Pieces.