Brilliant. There's nothing like meta-humour that makes fun of the stupid parts of an awesome game. If all game articles were this good, Uncyclopedia's bottom tiers would be at least half as tedious. I only have one small niggle, and that is the bracketed exclamations (exclamations!?) grow a little tedious by the end of the article. But it's probably worth is for the overall effect anyway.
Metal Gear Solid is meticulously recreated in encyclopaedic article form + lambasting ridiculous aspects of the game = win. The only other thing I would have snuck in somewhere is some sort of comment about the radio frequency being on the back of the game case. The pointless Codec interruptions are great, the stealth section is wonderful, and the anti-climactic ending perfect.
Prose and formatting:
Not sure if renowned is intentionally spelt wrong in the Boss Battles section, but this is my only niggle. Overall prose and formatting is extremely effective.
Images good, but nothing to write home about. Possibly would have been more effective in the Codec images to replace the text with your caption text. Images are made funny by the captions, which is good.