Halo Wars 2

This achievement may not come as naturally like the others in this DLC, however, it can still be boosted quickly in a Skirmish match against the AI on Easy. If you're taking this route, head into the Skirmish lobby and make these setting changes:

• Gametype: Domination
• Starting Supply: 9999
• Starting Power: 9999
• Fog of War: Off
• Skulls: Emperor

Now choose Commander Jerome as your leader and begin the match (AI leader does not matter). Once the match starts, quickly move around your half of the map and build two firebases and at least one mini-base. Continue to build upon and upgrade the buildings and turrets of your bases so that you earn enough Leader Points to unlock the Omega Team ability.

Once you have access to this ability, call it in near the AI's main firebase. From here on out, you can force your three Spartans to camp just outside the perimeter of the enemy's base, waiting until Jackrabbits (if the AI is playing as an UNSC leader) are summoned onto the battlefield near the Local Rally Point. When a Jackrabbit is close, select one of your Omega Team Spartans and click on the Jackrabbit to hijack it. Keep in mind you can choose to eject a Spartan out of a vehicle by tapping on the vehicle, scrolling over to the Spartan, and pressing again. Another note to keep in mind is that you must wait until all three members of Omega Team are killed before using the ability again.

This process does take a while and is very tedious, but it's far more effective and far less luck-based than trying to do it legitimately online. Once you have hijacked forty vehicles with Omega Team members, this achievement will finally unlock.