In order to earn this achievement you need to play the scenario outpost. If you can get this scenario with you and a boosting partner you can work together to kill the akrid and then take in turns to deliver the T-ENG.
Since you only need to deliver 2 for the achievement, you can both earn the achievement in the same game.
Note: If trying to get this in a legitimate game, it will only count as a delivery if you are the one to deliver it, not your team.
If you give me neg feedback please let me know why.