I found something quite odd. The Demo Theater (in the P Sone classics version released in the Play Station Store, at least) says that the warehouse where Snake fights Vulcan Raven (which is below the middle of the permafrost layer) is below 30° Celsius. Room temperature is 20-27° Celsius. Freezing of water occurs at 0°C, or 32°F. I'm not sure of what trope(s) this fits under, but I'm sure there's something.

I feel that this page should not include information about the sequels, even if the information relates back to this game. The page in its entirety should be readable by someone who has played only the first game without fear of spoilers for the rest of the series. If anything comes up in the sequels that relate back to the first game, then that information should be placed on the sequels' pages.