Been trying this for the whole night now. Still haven't beat level 1.
Here are my issues:
1. GTX780 + BlackList = Random crashing. You need the latest beta drivers. Took me 3 hrs to figure out. Thought it was my GPU that's factory OC, but underclocking didn't help. Thought it was my CPU + RAM OC. Reset to stock, no help. Found these drivers, and no crashes so far.
NVIDIA DRIVERS 326.80BETA
2. BlackList + Win8 = No alt-tabbing. I am running the latest patch. It just won't resume the game for me though you can hear that pressing escape will go into the menus and back. You can't even "bring program to front" in Task Manager since it's no longer there.
3. You can't stealth takedown enemies when they are standing inside a doorway. It causes you to close the door instead. Similar problem to picking up a gun vs a body.
4. Yes, WALK AND RUN TOGGLE IS CAPSLOCK. IT'S SO STUPID. The older one used the mouse wheel to scroll between walking speed, and there was a visual indicator of how fast you are going.
5. Does throwing bodies off of a building count as "non-lethal"? :D
6. Indicators of when you can take people down is not very good. The very first zip-line take down I wasn't able to time without just mashing "E". Same with stealth takedowns when you are hanging off of a ledge.
Still a bit more console-ified than I would like. And you still need to shoot/stun/knock out people for certain parts of the game. So far it's been impossible for me to play pure stealth on 'realistic' mode.