Hit the marker to launch the op.
Start out by ambushing another three man patrol.
Next it's a smash-the-truck run. The Hammerhead remains ideal for the job.
Now, a lair smash-and-grab. This bicycle looks awfully familiar.
(Special note: unlike certain other story-mission lairs, this one is rich in loot crates, so deploy your scan often). Once inside, download the local lair info, and fight your way through the next room of swarmtrooper variants. These you can take or leave, but in the following room of helltroopers, you must kill everything to advance.
The room after has the actual server you're looking for – hack it, then kill as many LEGION as you care to before proceeding.
The next corridor leads to the elevator, and mission's end.