I took N2, mostly for fun (a very twisted and mazochistic variety thereof), in Hungary. About 80 other people showed up, all but 3 of them in their mid 20s (I was one of the exceptions

) There was a clock in the room, which seemed like it was temporarily hung from the projector screen just for the purpose of the JLPT. The test was started and finished according to this sacred clock (event though it wasn't quite on atomic clock time)
This was my first JLPT.
kanji: As a way of preparation, I spent a few days going through half a dozen practice tests, and studying the recurring unknown words. It turned out to be a decent investment because about 4 of those words did actually pop up here and the next section, and the rest were common words. I think I did pretty well on this section.
word compounds and compound words: this was the most painful section, I ended up guessing on half of the questions.
sentence Lego: a couple of the sentences felt a bit odd, but I did my best to choose the order that felt the least weird.
reading: I wasted a lot of time trying to find the "mottomo yoi" from the two goodish answers in the case of two of the short texts. I hate playing this game of smoke and mirrors, and the game hates me right back. As a result I started running out of time on the long text, so I couldn't read it as thoroughly as I would have preferred. I also didn't like the idea that the footnotes were overflowing to the next page. I finished the information retrieval about 500 ms before they called for pencils down. On the practice tests I usually had about 15 minutes left over, but it seems like practice and reality are indeed different. Overall I felt I've made the best choices given the circumstances, thinking enough but not overthinking things.
listening: shock and devastation. Due to a combination of the nasty distorted pile of poo boombox they used to play the CD, the skipped lunch (the test ran from 11:30 am to 2:30 pm) and the exhaustion and stress of the written portion setting in, I did much worse than on any of the practice tests before. Even discounting these major factors, the test seemed harder than average, both in vocabulary and the complexity of the questions. The last section didn't feel so much a listening test as an exercise in taking notes and solving puzzles. I'm not too worried about outright failing the listening test, but I was hoping to pick up a bunch of extra points here to pad for any shortcomings in mottomo yoi guessing and word compounding. That definitely did not happen.
Overall it was an interesting experience that I'm glad to have tried but that I hope I will not have a need to repeat anytime soon.
Edited: 2014-12-08, 4:40 pm