I figured feed would be similar to what Rippers do; eating themselves. Hunt is likely similar to what feed used to be and lurk should be mostly unchanged. But that is mostly guestimation and if you roll to determine what happens on a failed test, I could be only partially right.
"Fetch me another plaything. This one seems to have broken." -Urien Rakarth
Space Marine- "This planet is ours, witch."
Eldar- "No ... This planet is theirs ..."