Do not judge this game (referring to The Fall, since the convo strayed to DXHR) by TotalBiscuit's review.
The technical problems seem to be hit-or-miss. Either you will experience them or you won't. It seems to depend on some currently unknown hardware/software config of the individual user.
I did not experience anything like the problems he showed in his review video. I did have the mouse sensitivity and hacking bug, but those were both fixed by changing my VSync setting. After that, I had no problems with the game.
Since I can judge the game by its gameplay/story merits (which TB cannot), I'll provide my very brief review. "Brief" because this post is longer than the game itself.
It's DX:HR with no vertical gameplay, simplified graphics, a funky inventory/shop system, some problems with difficulty balance (very easy with one or two hard spots), and, of course, absolutely no length. Still, I enoyed sneaking and hacking my way through it for two days. Though maybe because I haven't played any games for a couple of months.
IF you don't have the serious bugs, then it's an ok game (but only at half price).
IF you do have the bugs, then it's probably unplayable.
Impossible to know whether or not you'll be afflicted until you try running it on your own system.