This has been posted before. If the player is an engineer, Shepard can deploy a combat drone inside the room that has the Cerberus soldiers after avoiding the overhead turret. Liara can also use her powers as well as Ashley?Kaidan's powers killing the guys without entering the room.
This time, as an engineer, is deployed my combat drone before avoiding the turret. I wasn't able to use Liara's and Ashley's powers. My drone quickly killed the Cerberus guys. The music stopped, but I still had to avoid the gunfire from the turret.
I deployed the drone just as the tram arrived. Those Cerberus guys were dead before any of them were able to get out of the tram
When at the area before getting into the archives, I deloyed my drone inside the booth where the Centurian was. Killed him easily.
When using adrenline rush, when facing the baby reaper, I was able to destroy 3 of the tubes. Never did that before