Hi everyone, my name is Peter Lindgren and I'm the Technical Director of Helldivers 2 . I've been making games at Arrowhead since the Magicka days and I've been involved in every game we've released to date. I will do my best in this post to address the concerns and confusion that's come up recently regarding the choice of Anti-Cheat software in Helldivers 2. So, let's start off with the more urgent questions:

Is GameGuard a kernel-level / administrator-priviledge anti-cheat?
Yes, GameGuard is a "kernel-level", aka rootkit, anti-cheat. Most anti-cheat run at "kernel-level", especially all of the popular ones. It's unfortunately one of the more effective ways to combat cheating. There are some anti-cheat that can run in "user-mode", but they are much less effective and tend to be cracked very quickly, resulting in widespread cheating.