well, in the game, they will only appear on a black background. they aren't going to appear over anything else; they aren't semi-transparent, the background is always black.
also, your mockups (notably the "AA" one) employ banding, which alistair above just told me was bad, and which i was purposefully removing in my edit. so i'm not sure it's a good idea to re-add the banding that i had just removed.
you also change the design for several of them; e.g. you make the oval round, and you remove the second A within the larger A (and remove the gate-like element at the top); those aren't optional parts of their designs, they have essential symbolic meanings, and are part of the game's story. i do like your third re-do, but the first and second ones change their meaning too much.
for an example of what i mean, here's one of the in-game cutscenes:
it's important that the Aa design in the achievement icon match that cutscene. by changing it so much, it becomes unrecognizable almost.