BlazBlue: Cross Tag Battle Special Edition

This can be done in any versus game mode (not including the episodic story mode for some reason). I recommend using a second controller but it can be done against AI as well. Go into versus mode and pick any characters. To perform a reject guard you need at least 1 meter. You can then hold away from the opponent against a wall and hit yourself with the other controller (wait for the AI to hit you). As soon as the hit lands you must click and at the same time. You'll know it was a success if your block glows green and your opponent is pushed away from you. Gather 1 meter again and repeat 9 more times.