Formal:
* Молодец! (Molodets!) - This is a general and very common way to express "well done" for both men and women. It literally translates to "well done" or "good job."
* Отлично! (Otlichno!) - This means "excellent!" and is a more formal way to express praise.
* Браво! (Bravo!) - This is a more enthusiastic and celebratory way to say "well done."
* Хорошо! (Horosho!) - This means "good!" or "well done!" and can be used in a variety of situations.
Informal:
* Круто! (Kruto!) - This means "cool!" or "awesome!" and is a very casual way to express approval.
* Здорово! (Zdorovо!) - This means "great!" or "fantastic!" and is another informal way to say "well done."
* Ты молодец! (Ty molodets!) - This is a more personal and affectionate way to say "well done," literally meaning "you are well done."
* Классно! (Klassno!) - This means "cool!" or "awesome!" and is a more informal way to say "well done."
The best way to choose the right phrase depends on the specific situation and your relationship with the person you're speaking to.