GRAVITY RUSH™ 2 All Costumes with 0 Dusty Tokens
This seems to be a glitch, but I'll do my best to explain what happened.
At the end of mission 21, after the climb with the last two tablets and the icicles, I overshot the exit by a bit, and when I was falling towards it along that wall it registered me as out of bounds and teleported me. I continued, but instead of following the red particle trail, I gravity slid along the exit tube and up the world pillar until it suddenly started registering me OoB no matter where I went. I tried falling back down and following the trail, but it wouldn't register the cutscene that would put me in Eto. Eventually, I tried reloading a save, but ended up on a black screen (the game was still running, pressing the home button would put up a resume screen). I closed the application, relaunched it, and had all the costumes.
Something to note: I DO already have a save with all the dusty token rewards unlocked, however, I'm not certain that has much to do with this, as I was still missing the Unlimited Potential talisman.