Obama deported more people than Trump. His policies in the Middle East were an utter disaster and caused tens of thousands of deaths.Not sure how a negative can be considered an "achievement".
His actions in regards to travel bans, forcibly separating children from their parents, extortion, and racism will be his legacy.
Clinton did more damage to Black Americans that any president since Nixon. He was also guilty of sexual abuses worse than Trump and has been accused of rape by two women.
I despise Trump but the bar isn't set very high.