Ad Victoriam

Ad Victoriam is a quest and achievement in Fallout 4.

Quick walkthrough

 * 1) Follow Proctor Ingram
 * 2) Speak to Proctor Ingram
 * 3) Plug in Beryllium Agitator
 * 4) Activate power transfer switch
 * 5) Follow Liberty Prime
 * 6) Defend Liberty Prime
 * 7) Enter the Institute

Detailed walkthrough
'''A Stroll Through Boston. With Superior Firepower.'''

In order to get the war machine running under its own power, you should speak to Proctor Ingram, then ascend the scaffold and insert the Agitator into the war machine’s reactor port (behind the head). Return to the gantry computer and press the power transfer switch.

Escort Liberty Prime through the streets of Boston in a roughly northerly and then westerly direction. You can neutralize any synth threats, though you have impressive fire support. You may wish to use the bridge when the war machine crosses the river. Continue until you reach the C.I.T. ruins.

At the ruins of the C.I.T., expect multiple synth threats at once. Remove all of them. When the war machine successfully makes a hole in the Institute’s defenses, it’s time to drop into it.