Halo Wars 2

This achievement can be done by simply using Johnson's Repair Beacon ability a total of fifteen times; you don't actually have to use it on a vehicle.

If you want to get this done quickly, head into a solo Skirmish matches against the AI on Easy and and make these setting changes:

• Gametype: Domination
• Starting Supply: 9999
• Starting Power: 9999
• Unit Ability Cooldown: 200%

Now choose Sgt. Johnson as your leader and begin the match (the map choice does not matter). Once the match starts, build an Armory and then build the Sgt. Johnson unit. With Johnson's mech out on the battlefield, simply use his special ability by tapping while the unit is selected. It will take about forty-five seconds for the ability to cool down, but once it does, use it again and again until the achievement finally unlocks.