ACE COMBAT 7: SKIES UNKNOWN

In AC7's TDM, you will be a part of a team of up to 4 versus 4.
The most important thing about TDM is not to be a liability for your team. It's better to not get any kills and not be shot down than it is to shoot down 3 and be shot down 3 times.
The best way to be an asset to your team is choosing the right aircraft:
It's far better to choose an aircraft that can lock on to multiple targets at once: any aircraft that can fire 4, 6, or 8 missiles at a time is a definite possibility. The Nosferatu (a DLC plane) can even fire up to 12 at once!
If being the big gun of your team isn't your style, than I would recommend any aircraft that has the SASM. This missile will detonate if it senses that it's about to miss its target and will usually damage it. Against slow-moving targets, it can do serious damage. This is a good weapon to use as it is assisting the rest of your team with cutting down the enemy team's health. Remember: all team points are cumulative! It doesn't matter if you don't get the kill, as long as your teammate does, you will reap the benefits as well!
(I personally managed to get over 12 hits and 3 kills with the SASM in one match once. While I didn't have the most kills, I had the most points and also was never shot down or even hit).
Just remember that it's always about teamwork and you'll get this achievement in no time!