Mass Effect 2/Archangel

The Afterlife, Pt. II
After welcoming Mordin aboard you'll have access to the Normandys Tech Lab'. You'll be doing plenty of work here preparing your ship and teammates for the final fight against the Collectors. If you've got the resources available, go ahead and research something before heading back to Omega. Not only will you strengthen your squad, you'll get a nice new achievement to boot!

Now it's time to head back to the Afterlife club in search of the one they call Archangel. Talk to Aria to find that she doesn't know much about Archangel, but she does know that merc groups are hunting him. With this information, head back downstairs and find the merc recruiter. Signing up for the hunt is your ticket to finding Archangel. After signing up, a young kid will come in planning to do the same. You can let him sign up, or you can dissuade him from becoming rifle fodder with a Paragon interrupt. When you're done, leave the club and head for your shuttle (on the west end of the hub). Note that taking the shuttle leaves you stuck at Archangel's base until the mission is completed. If you have anything you want to take care of first, now's the time.

Angel of Death
Upon arrival you'll be given orders to find Sgt. Cathka, the Blue Suns merc in charge of freelancers like yourself. The path to him is rather straightforward, but there are a few things to look for along the way. In the Eclipse planning room, you'll find a datapad lying around. Pick it up to get a simple little sidequest that can be finished after mission completion. Just beyond this room, through a door on your left, is a datapad that can be hacked for some quick credits and some element zero. Also in here are controls to the Eclipse mech's IFF systems. You can bypass the to act hostile to friend and foe alike, something that will assuredly come in handy later on. Farther down, near the forward merc post, is another datapad to hack for credits. Nearby is a door that can be bypassed; a medical station, power cells, Submachine Gun Damage (research), and more credits lie on the other side.

Once you find Cathka, he'll tell you what he can about the mission. Basically, you're an expendable distraction. Once the freelancers are dead, Eclipse moves in, then Blood Pack, then Blue Suns.