Here is the full list of all 15 Pretty Girls Klondike Solitaire achievements.
Completed all EPHELIA costumes.
Completed All costumes.
Completed all TSUBAKI costumes.
Completed all AOI costumes.
Completed all HONOKA costumes.
Completed all SENA costumes.
Completed all SHIORI costumes.
Completed all SERIKA costumes.
Completed all NAGISA costumes.
Completed all MAYU costumes.
Cleared Hard mode.
Cleared Normal mode.
Cleared Easy mode.
Completed all AIRI costumes.
Played a first game of Solitaire.