I played an hour or two... sadly I had to stop because it was late and my bed was waiting. Anyway I must say it's a fantastic game so far. And to be honest I like it alot more then Half-Life 2 (which I thought was less good then the first Half-Life). It's better then HL2 on so many levels. It reminds me a bit of HL1, which is awesome! The puzzles, the traps, the unknown, the panic, the atmosphere, the graphics (specially the HDR and the lighting) are all great and much better than HL2. I liked how comparing to Half-Life 2 you had NO clear idea what will happen next (where in HL2 you knew your final objective would be the citadel). Running through the broken citadel and not really know what will happen next reminded me alot about the black mesa complex after the disaster. The instability of the location and you trying to make your way through it, not knowing what will happen next really brings back that creepy atmosphere. The core level was also very good, graphics and gameplay. This level totally reminded me about some objectives in the first HL... making your way to the top and solving the puzzle little by little.
I also loved playing beside Alyx. It's a new expierence wich sometimes really surprised me and brought me an expierence I never had with any game before (not even with HL2). Alyx really expressing her feelings... being scared, shocked by what just happened... crumbling like a child, expressing her feelings for her father and dog, sometimes without words. I love it so far. Really intense story wise, the graphics are awesome and so is the gameplay. Now I'm going to work a little bit further and wait till 5pm so I can go home and finish this awesome game. I hope we can expect te same for the upcoming episodes.