Mission 6 Wolverines!
Half way through the defense section of the mission, two BTRs will spawn in. You are required to retrieve the drone controls in the diner across the street. After eliminating the BTRs, you will defend the Burger Town roof. A lot of enemies will spawn in and you should easily get 10+ kills with a drone strike in this section. Reload checkpoints as needed.
Here is a video guide with English commentary!
Here is a playlist of guides for this game!https://www.youtube.com/playlist?list=PL-HeW6XkKdUK97oYVSMU7...