Best way to get this is to host a private match and invite a boosting partner. Setup a tag event on storage map for 3 minutes and just follow eachother around map touching bumpers at a slow speed. Every second or 2 you are touching or bump into eachother it will count as a tag and switch persons. Repeat through the entire 3 minutes and if you both dont have achievement by the end, repeat another round and congrats on achievement!