The egiptian one with horus, the piece of cloth with the big fiery thing in the middle, the one with beard god with a nice sun in the background, the one with the dude standing in front of a mountain of flames, aaaaand I can't remember the last one.
the synbols are sumarian numbers: http://en.wikipedia.org/wiki/Babylonian_numerals
Y = 1 < = 10
The numbers in the graphic on the left total 35 and the cranial scans has a number 5 on them. This led me nowhere.
So what I did was think this way: The puzzles are getting harder. The code is 603 and the game designers probably took 2 of the numbers off the coded wheel. So I set the 2 blank spaces on 0 and 3 (the number 6 has the YYY symbol aligned to it).
The code wheel has the following numbers: 1-3-9-11-12-?-20-26-?-35 (the ? are the blank spots).
So the 1st missing number must be between 12-20 and the second between 26-35.
Under the 603 code, you can rotate symbols. The symbols there are: 8-6-4-12-1-25-20-14-7-17-31-3-10-11-2-13-9-5-35-15
Only numbers 17 & 31 fit the range of missing numbers on the coded wheel.
603 is therefore -> 3-17-31
YYY_____< YYY______<<< Y __________YYY ___________Y