ini that you can find easily by searching the steam hub guide or a google search, that supposedly fixes the shadows dynamic range and other glitches but i have not tried it.
The patch also fixed the shadows for me, i had no shadows as you can see in my first couple of missions.There is also a tweaked. Your peripheral vision must be really alert for this to work consistently, specially if you are doing no save dry runs only to fail at a hack later in the mission and have to restart all over.
The reason that patch 1.02a is important is because it fixes the unlockables bug, basically even if you unlock the things by completing star marked objectives, the game will not let you use them in the next missions, now most of the unlockables are not that important, but the one that will make a difference is the hack device v2.0, because in later missions it will help a lot with the hacking, if you try to hack in later missions with the v1.0, it will be very hard as there is very little time and the decryption will be very slow getting the numbers, many times making you fail the hack and if your lucky getting the hack done with 1 second remaining.
The steam version of the game is not patched, you can find the patch here:
Before we start i want to get a few things out of the way.