Hmm, I like what your doing, but don't like the columns for the [target score?]. One thing I'm not sure of is if the unlock cells (assuming that's what they are) are for the thing above or below. My counter suggestion (so far):
It was really weird to try and describe the unlocking sequence, because you unlock whatever it is by transitioning from one rank to the next. So it could be said, reaching 100% in the previous category gives you this, or just reaching this level give you this. That's why I was just thinking of doing the in between the two ranks.
So nothing unlocks if you get A to 100%? or does it not have a percent? As long as it's noted in text at the top of the page that you unlock stuff after you get the category to 100% (except A), I think how you have it is fine.