Exactly half of the game completed! That is, on normal difficulty and half the Epic difficulty. (So ​​that you still have fun playing :-p) There is a sacred artifact and legendary gear in the save.

Now about where and how to throw files from the archive:

Go to "My Documents", look for the "My Games" folder, and drop the contents of the archive into the "Titan Quest - Immortal Throne" folder. Let's go into the game) It should work ;-)