I'm having trouble with the last of the Rannoch missions, where Shep wakes up and takes on a Reaper.
Shepard has a targeting laser which will call in an orbital strike with the combined might of the Quarian Migrant Fleet, but there's two major problems standing between the commander and victory.
The Targeting Laser takes a while to power up.
The Reaper is trying to kill you.
I can consistently avoid the Reaper's attacks for the first volley, but each time you hit it, the Reaper moves forwards, giving you less time to dodge future assaults. Is there some key to avoiding the Reaper's attacks? Strafing doesn't seem to be enough.