Halo 5: Guardians

Mission 10 - Enemy Lines
Difficulty: Easy

During the part of the level where you fly the Phaeton and board the Kraken, do not shoot any of the operating shade turret on the top of the kraken's deck. ALso make sure that you do not accidentally command your AI to shoot them. Just get in your phaeton and immediately go to land on the Kraken, complete the objective by destroying the core and finish the level to unlock the achievement.

During this phase, jump onto a Phaeton operated by another Spartan to also unlock:

Here is a video guide for this achievement, I hope it helps!

Easiest way to get this achievement. Have a carbine or beam rifle or a battle rifle on hand. Kill the grunt in one of the lower turrents. Get on a vehicle then get of your vehicle when you are parked right on top of the turrent. Destroy the core.
SIMPLE AS!
The video will show you just how to do that.
If you leave negative feedback I would like to know why. Because I don't see anything wrong with this guide. It's fool proof.
Who ever put a negative, please provide the reason below in the comments. I don't like trolls. This idea was found by me during legendary. So it works.

I was able to do this while playing solo and without any other guides.

To control the altitude of the Phaeton, on the controller setup that I play I had to use and .

I noticed that after killing 2 of the initial Banshees that are flying around the Kraken, carefully hitting them with the Phaeton's guided missiles from an angle where I wouldn't hit any of the Kraken's turrets by accident, a big passage opens at the bottom front of the Kraken and 2 more Banshees come out. You can take advantage of this window and rush inside it, destroy the core with sticky grenades or some other power weapon and then get out of the Kraken.

It is a fast get in and get out thing to do and I had no problems with my team destroying any turrets while I did that, so the achievement unlocked.

If this idea helps you in any way, feel free to leave a thumbs up. Thanks.