"Yes, he has." While is he was stuck in the Med Bay, Erandur went back paying most attention to what the Network offered him. Knowing of the other things Higgs was capable of.
"I have fought him physically, killed him. That is how I am the way I am right now.." Erandur gave Katherine a look with that one. "He has an ability to cause a rain that ages." His older eyes darted to her when he said that.
"He said something to me, after I killed him, and he surprised me with his return... But he said something just as he summoned that beast." The Tar-Kraken... "He said: 'I have to say, Erandur. You really ran a number on me, but...I have to dash. Afraid I can't give you the satisfaction of trapping me away just yet...' At that moment, I was thinking of how I did not have my soul trapping Waraxe."