Here is the full list of all 26 Mighty Math achievements.
Collect either a positive or negative 1.
Collect either a positive or negative 2.
Collect either a positive or negative 3.
Collect either a positive or negative 4.
Collect either a positive or negative 5.
Collect either a positive or negative 6.
Collect either a positive or negative 7.
Collect either a positive or negative 8.
Collect either a positive or negative 9.
Survive Round 1!
Collect every number in Round 1 and Round 2 in a single run.
Survive Round 5.
Survive Round 6.
Survive Round 7.
Survive Round 8.
Survive Round 9.
Survive Round 10.
Survive Round 11.
Survive Round 12.
Survive Round 15.
Score more than 3000 in a single run.
Score more than 3500 in a single run.
Score more than 3750 in a single run.
Score more than 4000 in a single run.
Score more than 4250 in a single run.
Score more than 4500 in a single run.