Just finished Sherlock Holmes: The Awakened. A few quick notes:
(1) Style: old-skool point-and-click adventure done in a first-person format. Means: zero replayability, zero "alternate solutions," very slow pacing. Just so you know.
(2) Puzzles were pretty clever, sometimes insanely difficult (if you can solve some of those number and code puzzles without the walkthrough, I tip my hat to you), and usually fairly logical. AFAICT there is always exactly one solution to every puzzle, and the game babysits you so that you can't leave an area before having discovered everything in it that's to be discovered.
(3) Writing pretty good for a video game, but if this was a short story, it would not get published in a collection without some fairly significant editing. Some anachronistic use of language; does not strictly follow the canon for the Cthulhu mythos nor Sherlock Holmes. So if you're the kind of person who gets irritated if the Elder Sign is called the Sign of the Great Old Ones, avoid.
(4) Voice acting pretty good for a video game -- accents and voices fit the characters pretty well; Watson even emotes OK much of the time, and Holmes sounds nice and dry like he should; unfortunately the "reading lines from a script in front of a mike" feel is still pretty strongly present.
(5) Honorable mention for the character faces. They're quite well done.
(6) The general level of graphical quality, both design and technical (other than the faces) is very simple and bare-bones, more like something from the Gothic 1 era than today. So if you want graphical or design bling, you'll be disappointed. Still, it's not offensively bad either by any means. Same goes for sound and music design -- very bare-bones; just enough to get the job done, but not a bit more. The game looks and sounds very "old generation" -- I wouldn't be surprised if it was built on some fairly dated but OSS engine (Quake 3, perhaps?).
(7) Reasonably bug-free and stable. It did hang on me a couple of times, when alt-tabbing to the walkthrough and back (yes, I did use it a few times), and crashed once. There's no auto-save even between areas, though, so make sure to save your progress. The DVD version had me jumping through a few hoops to get it running on Vista x64 (had to download and manually install the copy protection drivers since the ones on the disk weren't x64 compatible). But mostly OK.
Overall, this is an OK game for what it is. The studio was clearly working on a very small budget, and IMO they spent it where it counts -- content rather than bling. If you want to support this approach, you may feel that the 18 euros it costs is money well spent; however, if you just want to play a fun game, you might want to wait until it makes it to the bargain bin.