That’s really great! Almost 25 years ago I passed level 2, after what I thought was quite a lot of work. The reading comprehension was definitely the hardest part for me, because of kanji, of course. Having left Japan more than 20 years ago, of course I have lost most of what I knew. But I’ve learned lots of other things, so it’s all good.
The most difficult part for me was the listening, but reading comprehension was also tough, mostly due to the time constraints. I’m not fabulous at skimming text, especially in a foreign language.