Need for Speed Hot Pursuit Remastered

Guide for Gamepass Ultimate member only.

Just discovered you can boost every online achievement by yourself by downloading the game to your PC (Since Gamepass Ultimate members also get EA Play on PC too) and activating cross-plataform.
You actually get different EA IDs on each platform so you can even add your PC EA ID as a friend in the game for invite sessions.
Just add yourself as a friend, create an invite only session for the achievement you need and that's it.

If you don't intend to do it in the legit way (which is pretty easy thanks to the Cross play function - you can find plenty of players right now after release) grab a boosting partner, create an online lobby (preferably invite only or just for friends) and pick Interceptor game mode. Whoever play as a racer must go as fast as he/she can while the other player (who is the cop) hits the break as soon as the game starts. By doing this the race ends much faster than if you just start chasing each other until the finish line. You can choose between a Cop or a Racer any time in the lobby with pressing the button. (In case if you wanna trade wins race by race.)