Just beat it too!
(SPOILER)I thought the end was great... Kind of.
What got me was the Fireflys had been doing this for a while, and made no progress, yet kept at it. (Mind you, it could have been a lie from Joel, but at the same time it makes more sense that he was telling the truth. I mean they discovered the mutation and plan pretty god damn fast, and decided to operate that soon? They had to have done this before.)
What kind of kills the ending a bit though was that no one took any kind of believable action. Hey, there's a guy trying to resusitate a girl! Let's knock him out.
Hey, there is girl I've practically raised as a sister/daughter! Let's sacrifice her to research that has consistantly failed horribley!
Hey, there's the guy who just gunned down god knows how many of our men! How about I not take this clean shot at his face!
Also, AI in the last area was an an all time bad. I have no Idea what the hell happened, but I Molotov'ed a guy, no one reacted. I strangled a guy in front of like, two other dudes, got spotted, stepped behind cover and they immidiately lost me. In fact I was immidiately lost like, three times.
Really, once you get past the Winter section, AI seems to trout itself. I wasn't even trying to abuse it either, just kind of happened.
I was going to give the game a 9/10, but between later game AI issues, and some issues I brought up in the end game spoilers, it gets an 8.
Still, definately worth the full price, and dear god is Winter awesome. I can see why people would overlook the flaws and rate the game higher then me mind you, cause what this game does well, it does really damn well. And the biggest issue, the AI bugging out, doesn't really seem to happen all that often until the end, at least for me.