Unable to open Assembly-CSharp.dll in DnSpy

Encrypted, u will need a phone with root and use gdb method to decrypt, u can use game guardian too but gdb is more secured to get dll
 
Thanks! I figured as much. I had read up on gdb and game guardian method for grabbing the assembly. Is there a tutorial or post somewhere which goes into the process of re-encrypting the assembly after I add my mods?

Once I get the decrypted assembly and add my mods, what do I do with it?
 
Examine the metadata of the file to see if there are any indications of encryption or obfuscation techniques being used. Some Unity games may use encryption tools that leave behind metadata clues.