Remote Attestation is only one piece of the puzzle; all it verifies is that the user hasn’t tampered with the Windows boot process, it doesn’t stop kernel drivers from being loaded. Since it isn’t a turnkey anti-cheat solution provided by Microsoft, the game developer still has to detect and watch anything that injects code into the process and look at the list of kernel drivers to see if the player is cheating via a new cheat software or maybe even cheat software they made themselves. Effectively, Remote Attestation gives anti-cheat assurance that its process detections are accurate.