Foreword

These tips imply the run is scouted.

Reference run (sorry for the audio cracks).

Credits to Canis, Monke, Rose and Noumena for the Patriot Exosuit technique to break the Overship's shield and the one-shot strat.

Credits to LilGMan for the Expendable Napalm technique.

Shield down, one-shot

The quickest way to destroy the Overship is to align the cannon so that it fires into one of its round openings, such as those circled in the image below. Any one works.

Only one shot is needed. However, you will need to destroy its shield first. The Expendable Napalm can take it down in a single shot. For a multiplayer, you can use the Patriot Exosuit (it takes about 300 rounds from its minigun).

Horizontal alignment

Once the cannon is properly aligned during your scouting run, proceed as if you were going to rotate the horizontal valve and turn your camera until your compass and the upper part of the cannon are parallel.

Keep the degree number (here 318) in mind and during your attempts, rotate your camera while pivoting the cannon until the compass box showing that number is aligned parallel with the cannon.

Vertical alignment

The vertical alignment primarily allows you to determine whether your horizontal alignment is correct.

Here, I have three hints:

• The degree number on the compass (here 1).
• The small box around the compass degree (its lower left corner must touch the part of the cannon highlighted by a red line).
• The trapezoid shape highlighted by red lines through which the cannon visually appears.

It is much easier to control the height of the cannon in this trapezoidal shape. In my run, I knew it had to be roughly in the middle, with a little more "air" in the upper part of the trapezoid.