Anti viruses won’t care as it won’t be injecting executable code.

How do you know parts of the encrypted stuff isn't executable code? Like is he has secret levels with secret functionalities then part of whats encrypted might get executed, or interpreted and executed or something like that.

If he's going out of his way to hide and encrypt secrets, I wouldn't be surprised if parts of his gameloop are obfuscated as well. And if Anti viruses detect high levels of obfuscation, that just raises flags as probabilistic malware