Discord is a closed source system. Matrix with a discord bridge would work. You just use your matrix server and a bot to send and receive on your behalf. There is functionality between but technically the two systems are independent. I also see issues with it not being 100% all the time. Typical of something bridging to a closed system.
What compatibility are you looking for? A non discord application connected directly to a discord server and can send text, audio and visual via discord infrastructure? Nah, probably won’t happen. Bridging is the closest right now.
Cyberpunk on easy with aim assist is pretty chill. Popping heads and blowing off limbs. It’s a comfort game for me.