The Hardcore Modes Title update for Mental Math Tutor has 10 achievements.
START ATTACK MODE HARCORE
START ENDLESS MODE HARDCORE
GET 1 RIGHT ON HARDCORE (ENDLESS MODE)
GET 5 RIGHT ON HARDCORE (ENDLESS MODE)
GET 10 RIGHT ON HARDCORE (ENDLESS MODE)
GET 15 RIGHT ON HARDCORE (ENDLESS MODE)
GET 1 RIGHT ON HARDCORE (ATTACK MODE)
GET 5 RIGHT ON HARDCORE (ATTACK MODE)
GET 10 RIGHT ON HARDCORE (ATTACK MODE)
GET 15 RIGHT ON HARDCORE (ATTACK MODE)