I got the first quiz achievement easily enough, now I have to wait for the second quiz to unlock to get the other one.
I have to say though, compared to the first game, the achievements in this one are so annoying. You have to micro-manage your friendships, make sure you've chosen the right factions to side with to open up new missions (they are locked out permanently if you choose the wrong one), and all the different mission modes are just annoying as hell.
They really screwed up with this sequel. The combat is way better, but the grunt mobile suits are completely useless (and some of the missions force you to use them), they actually made parts gathering MORE annoying than before, and they removed original mode entirely, with its awesomely ridiculous combined universe storyline.
The menu in the first one was way more streamlined, everything feels so convoluted now.