The phrase "done good" is an informal and colloquial way of saying that someone has done well or achieved success in something. Some synonyms for this expression include "done a great job," "accomplished excellently," "succeeded superbly," or "performed admirably." Other similar phrases that convey a similar meaning include "hit it out of the park," "aced it," "nailed it," "crushed it," or "knocked it out of the park." These synonyms are commonly used to praise and congratulate someone for their hard work and success in achieving their goals.