Oh you were asking me? I thought you were asking Kimidori
But yeah, I don't really know how much kanji I have memorized. I never took an official class or course and the only benchmark I bothered to take was passing a JLPT N3 a little over one year ago (Grammar/Reading/Listening, on a 60 scale: 50/60/43).
I still have problems with kanji and reading exactly what is written and relied more on the nuance of the passage, but if that test was credible, it showed that it's enough, at least for N3.
And regarding that VN I was dying to play: Little Busters. I actually finished that game wholly with AGTH in one hand and a translator in another. But my love prevailed!
And then there was Itsuka Todoku Ano Sora ni. I took about two-three years finishing that game because of the absurd level of writing involved, but again love prevails!