Those back-to-back Metal Gear Rex fights were giving me fits. This time through the game I was using chaff grenades all over the place, and so when I needed them to avoid Rex's annoying missile attacks, I only had a handful, and it was tough making them stretch long enough to bring the beast down with my Stingers (which I had saved more than enough of).
Then there was the mano-a-mano fight against Liquid... I've always hated that part, but after a few futile attempts, I found a good strategy and was able to knock that bastard out. Not as aggravating as my last couple of times through the game.
And thennnnnnnn.... the jeep escape sequence. I died like 4 times trying that, whereas in the past I can't remember dying at all there. But, in the end, I made it out, with Meryl, since I withstood Ocelot's torture earlier.
I'm still amazed at how well this game holds up. Since this is my first time through since MGS2 came out, I caught a reference by Ocelot to a Colonel Sergei Gurlukovich of the Spetsnaz, who turns up later in Sons of Liberty. I also was able to pinpoint the moment Ocelot showed his hand in betraying Liquid, after Liquid revealed his plan to turn the base into a new Outer Heaven. Yeah, MGS still rocks.