Here is the full list of all 14 Higurashi When They Cry Hou - there are Ch.8 Matsuribayashi achievements.
Got one step closer.
Experienced a memory of escape.
Experienced a memory of punishment.
Finished the prologue.
Completed the puzzle.
Welcome a new student.
Began preparations.
Continued preparations.
Even more preparations!
Preparations complete.
Finished the final battle.
Went beyond.
Had a chat with Ryuukishi07.
Read all TIPS in Matsuribayashi.