Riot's Vanguard is the only one that needs to start with boot, and always run in the background. Others can initialize and close when the game is done, IIRC. Which is why they can work with proton/wine.
It's really sad that they chose to implement it. I would've loved to play Helldivers 2 but I just refuse to allow them that level of access to my device, especially for a game that isn't even competitive.
Their explanation for it makes sense though. They were running into the problem that a player could cheat and progress their games faster, etc. Since HD2 is essentially a MASSIVE, single DnD campaign that every player is a part of, those cheaters would break the campaign progress and ruin it for every single other player.
They also include shortcuts to install and uninstall only the anticheat. So you can remove it immediately once you finish playing.
That's that I don't get
You can run the uninstaller without admin privileges so why doesn't the game only have nguard running while the game is
Makes no sense to me