No missable achievements (plus 14 unknown)
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Bid your love goodbye.
Meet the villagers of Hinamizawa.
Help Rena find her treasure.
Have your luck run out.
Receive an unexpected report.
Lie to Rena.
Enjoy(?) a homemade snack.
Pursue the truth behind the crimes.
Take up another's bat.
Falling on deaf ears.
Run from the truth of your crimes.
Complete Onikakushi chapter.
Enjoy Onikakushi's after-party.
Read all TIPS in Onikakushi.