Son of the Devil

For the first question about hints, the answer was yes, and for the second, no. But direct instructions (like – it’s located there, go and retrieve it) are also unnecessary. A few more hints would be helpful (explaining that the spatial-temporal rift can be traversed, why the key needs to be collected at the Conflux, etc.). Since the item “dark star” is virtual and cannot be transferred, it could be allowed to complete the quest with any of the main heroes (because in the animation, they all rejoice together when it is found). By the way, I completed the quest about the zombie heads (also virtual) with a secondary hero.