After the first episode, I had mixed thoughts, and I can say the same about the second, except that it got worse. It got worse not because the game was made worse, but because they showed the same thing, literally the same thing but more. I was expecting a real "razeb" (destruction), but I received only "akhui" (amazement) from how "nichak" (nothing) it was.
In short, they added a couple of gameplay "plyukh" (bonuses), showed cool dialogues and interesting characters with locations, the base of renegades looks just "shikarno" (great), and the "vortigaunts" are also "akhuenni" (awesome), especially the one who is a partner in the first quarter of the game, he is just a machine, he "khuyachit" (beats up) everyone so hard that even I can't, he's a one-shot one-kill. But this is not the point.
The main problem is that, in my opinion, the episode should not have existed at all. They were obligated to release the FIRST, SECOND, AND THIRD EPISODES as a separate HALF-LIFE, or at least cut all three for the finale of the second. As a result, we got a "lyutyi tsirk" (fierce circus) for 20 years with constant delays, closures, and the like. At least they got on the new rails thanks to Lost Coast, where they added cool developer comments that explain many technical aspects of the game, like how Valve invented HDR, which is funny.
But, fuck... THREE YEARS have passed since the release of Two, WHAT THE FUCK, JUST WHAT THE FUCK HAVEN'T THEY ADDED ANYTHING TECHNICALLY NEW, THE PICTURE HASN'T GOTTEN ANY BETTER, GODDAMMIT.
Overall, I would give the episode a 7 out of 10. The main problem is that it should not have existed in the first place. Valve should have released the first, second, and third episodes as a separate Half-Life, or at least condensed all three for the finale of the second. Instead, we got a "fierce circus" for 20 years with constant delays and closures. And technically, nothing new was added, even though it's been 3 years since the release of Two.