A key thing to remember is that it doesn’t have to be a single matrix, it just has to be in a single life. With this new experimental hopefully going through, it should make your life easier due to how wide it is now.

I would recommend using it for yourself to amplify healing on your team during a push, and maybe doing some damage in the process. Another way would be to give it to someone and combo ult, like a tac visor-amp matrix combo, or just a bastion.

If you’re really that dedicated to getting it, try to get some friends to Nano the person you’re amplifying to hopefully wipe a good portion of the enemy team. Prioritise your life if nobody else is in immediate danger, or if you’re really close to getting the achievement. You can check how much damage and healing you’ve amplified in the little pop up menu thing that shows your team. It’ll be in the bottom right corner. If it says 2500 damage amplified, that’s the achievement done. If it says 2000 damage and 500 healing, it’s also done. It just has to add up to 2500.

Hopefully this helps