Here is the full list of all 33 Hitori achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Win 1 game in a row.
Win 2 games in a row.
Win 3 games in a row.
Win 4 games in a row.
Win 5 games in a row.
Win 6 games in a row.
Win 7 games in a row.
Win 8 games in a row.
Win 9 games in a row.
Win 10 games in a row.
Win 11 games in a row.
Win 12 games in a row.
Win 13 games in a row.
Win 14 games in a row.
Win 15 games in a row.
Win 16 games in a row.
Win 17 games in a row.
Win 18 games in a row.
Win 19 games in a row.
Win 20 games in a row.
Win 21 games in a row.
Win 22 games in a row.
Win 23 games in a row.
Win 24 games in a row.
Win 25 games in a row.
Win 26 games in a row.
Win 27 games in a row.
Win 28 games in a row.
Win 29 games in a row.
Win 30 games in a row.
Win 31 games in a row.
Win 32 games in a row.
Win 33 games in a row.