Here is the full list of all 10 KUUKIYOMI: Consider It achievements.
Play all questions in "Inconsiderate Mode".
Play all questions in "Consider It".
Getting over 20 points on "The Wave" in "Extras".
Getting over 20 points on "Jump Rope" in "Extras".
Getting over 20 points on "Batter Up" in "Extras".
"Consider It" for the first time.
Play 50 questions in "Consider It".
Getting all scores of over 65 in "Consider It".
Getting all scores of over 65 in "Inconsiderate Mode".
Open all the "Secrets".