Complex sentence: The game is about three people who are known mostly by their nicknames: two men, "Bachelor (Бакалавр)" and "Haruspex (Гаруспик)", and a girl nicknamed "Devotress (Самозванка)".
Split into simpler sentences: The game is about three people who are known mostly by their nicknames. Two men "Bachelor (Бакалавр)" and "Haruspex (Гаруспик)", and a girl nicknamed "Devotress (Самозванка)".