My youngest bought the XBOX version and he got one large figurine (approx 25cm tall), a standard game case with two DVD disks in it, a 'special' metal disk box with two slots/holder positions (probably the same as yours), some manual book thingy and other pamphlets.
I would suggest you aren't missing anything as you have a Bluray disk instead of two DVD's.
The meek shall inherit the Earth..........The rest of us are going to the stars! [Ben Bova]
Thief the final frontier...........boldly go where no man has gone before!