Does anyone know where to start on identifying unknown Opcodes?
I've managed to pull a compiled script from a game that I want to decompile but I have no idea where to start on identifying individual Opcodes and their functions.
The script is from an xbox game so so theres no way to actively dissasemble the process while its executing the script.

Thanks.

Assuming you mean VM opcodes, you'd need to find the VM interpreter and reverse engineer it.