Here is the full list of all 23 Hiragana Pixel Party achievements.
Completed 1 mission with perfect score.
Completed 10 missions with perfect score.
Completed 40 missions with perfect score.
Completed 80 missions with perfect score.
Completed 120 missions with perfect score.
Completed 180 missions with perfect score.
Completed 250 missions with perfect score.
Completed 300 missions with perfect score.
Completed 384 missions with perfect score.
Completed 3 Hiragana missions.
Completed 12 Hiragana missions.
Completed 24 Hiragana missions.
Completed 48 Hiragana missions.
Completed 72 Hiragana missions.
Completed 120 Hiragana missions.
Completed 192 Hiragana missions.
Completed 3 Katakana missions.
Completed 12 Katakana missions.
Completed 24 Katakana missions.
Completed 48 Katakana missions.
Completed 72 Katakana missions.
Completed 120 Katakana missions.
Completed 192 Katakana missions.