I'm weak, so I have a lot.
-Microwave corridor in MGS4, as stated before me. Great, emotional climax and visual storytelling for the toll his cause and his rivalry are having on him, and despite all these things, he keeps going down the hallway, the only path he has before him. Just great shit.
-The entire climax of MGS3, basically from The Ladder to the final phone call was just AMAZING to me. Felt like it had the pacing, action, musical cohesion, talent and production values of like blockbuster cinema but it was also a goofy ass game where you hunt crocodiles and it wasn't afraid to give you a thirty minute history lesson right before that battle with your foe. It's the shit that everyone slams and parodies Kojima for now, but I'll always maintain that MGS3 was the most mainstream sensible you can get while still fitting Kojima's style. Very punchy.