You need to use PacketLogger or just log the packets exchange throught the server-client.
HOW TO - Copy all "received" packets starting by "in " (which represents all the mobs that are in the actual map). And paste them in the tool.
HOW DOES IT WORK? - The tool just splits strings into vectors so it saves a lot of time.
This is an example:

Hope it simplyfies your work. Btw, WAAT is obsolete.
Download here:
(Join the spaces)Virustotal:







