Lots of players are saying Epic Occult Labs Difficulty is too much. I recorded an Epic Occult Labs run today using 4* versions of Hyperion, Void, Magik, Iceman, and Killmonger. I played well for much of the run but made plenty of mistakes. It took me 6 revives, 15 potions, and 8 randomizers to finish Epic Difficulty. I uploaded the run to YouTube with notes in the video description sections. Check out the video here, hope this shows other players 4*s are enough to get Epic Occult Labs rewards:
https://youtu.be/k6asLlWDGLU