I just got Witcher 2 for PC, having a hard time getting into the combat. Haven't gotten very far into the game due to that. However, I can see the story getting old. I'm about half an hour into the game, and I'm still feeling lost. They keep mentioning stuff like the "Drizzard of Bandolt, who slew the Pheldor in Northern Zalthored." Every time I hear stuff like that, I tend to lose interest.
Dark Souls I didn't get too far into. I'm committed to beating it eventually, but the problem I have with the game is the lack of direction, and that's where it really gets its difficulty from. Right from the get go, if you head in the direction you're facing, you're going the wrong way. The combat itself isn't so difficult...IF you fight against the enemy you're SUPPOSED to be fighting against.
Kingdoms of Amalur, I grew bored with very fast. Terrible story telling...I have absolutely no interest in anything that any character is saying. The only good thing about the game is the combat...which is actually a blast to play.
Deus Ex: HR is a lot of fun to try to stealth your way through. I never got the impression it was a very good shooter, but the stealth, and the story, is actually pretty good.
Alpha Protocol is a great concept, but a disaster. It's still fun, but when it was released, it was barely playable, and it's not a ton better right now. The stealth mechanics are completely broken, the combat is sub-par, and the animations are pretty horrific. The story itself, however, is pretty awesome.