To enter the underworld in Mythology Island, you need to first acquire a coin from the River Styx. Use this coin to pay Charon the ferryman to take you across the river to the underworld entrance. Then, navigate through the underworld by solving puzzles and challenges to reach the heart of the underworld.
the river styx
The River Styx is in the underworld realm of Hades. The boatman Charon will take you down the river and you must avoid the three hazards (rocks, flaming skulls, and river monsters) to reach the Throne Room of Hades where the dog Cerberus stands guard.
Go to the Temple of Hades to the right of the island. Clean up the graffiti to earn a drachma, then use the pomegranates (from the tree in the Sphinx garden) to enter Hades realm. You will rise the River Styx and get a whisker from Cerberus.
5 rounds of jumping ducking and moving
Cerberus is at the end of the River Styx challenge. Use the reed pipe to lull him to sleep and you can get a whisker from him.
The River Styx is located on Mythology Island near the entrance to the Underworld, guarded by Cerberus. It serves as the boundary between the world of the living and the realm of the dead in Greek mythology.
pass the river styx
In Greek Mythology, Lethe is the Underworld river of oblivion/forgetfulness.
Goddess of the underworld (River Styx)
Styx is a Underworld river in Greek mythology, and also a goddess. The ferryman Kharon crossed the Underworld river Akheron, not the Styx.
The River Styx on Mythology Island is not explicitly mentioned in terms of its specific length. However, in Greek mythology, the River Styx is said to encircle the Underworld multiple times, so it can be inferred that it is a vast and lengthy river.