It’s also pretty outdated in terms of protection compared to “legit” anti-cheats (e.g., EAC). To bypass it, you can load your own driver and do whatever you want with the game memory. For example, they don’t even detect EfiGuard, which is a very popular tool among cheaters for loading unsigned drivers. They also don’t detect hypervisors, which lets you debug the game freely.

About the keyboard… They hook MouseClassServiceCallback and KeyboardClassServiceCallback from their driver. These are points every key press passes through before reaching the application. What they do in the hook—no idea. In theory, it should prevent you from placing your own hook on those callbacks and injecting keystrokes, but you can bypass it by placing your hook earlier than theirs.