Talk:Perpetual Vortex/@comment-26401191-20150515053845/@comment-3391671-20150521043736

It's a bit bugged, but what I've found is that after the first few tries in the mission, the later disappears.

At first, you won't get the bonus, but after a few times, it should work properly. If not...just report on the forums that the mod/ability is bugged.