Really, the only area where the minibosses will always be completely optional is Tartarus. While the Underworld holds most of these encounters, you may also stumble across a secret one on your way ...

‘They’re all monsters!’ he screamed. He banished the Cyclopes and the Hecatoncheires to Tartarus - the Underworld. Gaia was horrified. She asked her Titan son, Kronos, to fight Ouranos and ...