Proceed at own risk to have stuff spoilered. This is a makeshift “guide” until TSWDB has the mission guide:
In tier two you get an SMS that basically translates to counting the flames and that giving the meeting place.[/spoiler]There are 7 flames indicating the Septimus Room in the Tabula Rasa.[spoiler] There should be a Phone on the far end which lets you proceed.
The next step is finding the actual person.[/spoiler] The text on the phone from the last step gave you a pretty good idea how the person looks like and that they saw you walking past a fat man aka Rosenbaum. So you gotta look infront of the Tabula Rasa for the person [spoiler]which should be near a fence.
One little sidenote…after the chase of that person you enter a portal and fight them. This fight currently has a bug. Normally you would remove the ice stacks with all fireattacks but right now it only works with the fire cross. No ETA on the fix but probably soon ™ so don’T get to fustrated if you can’t finish the fight on your highest elite right now…that should soon be possible