If the flag is specifically NyxLauncher.exe, then it should be safe to assume they are false positives.What's with the sketchy download mirrors?
Every single one except Terminal has been flagged by at least one vendor on VirusTotal.
Can sites like mega not be used for this specific game?
It's because of the compiler version and that debugging-related functions are used in the real-time mod detection.
Any other flags are likely to be true positives.