Say what you will about the rest of the first issue, but you can't deny that Jason stages a pretty awesome prison break.
During issue # 5 when Jason is fighting the Untitled. He finally manages to land a killing blow on it after pulling off a Batman-Gambit to catch the thing off guard; unflinchingly cutting himself with his own weapons to power them up with his blood. The most awesome part? Just before he kills it, he has a little mental dialogue where he mentions that neither the Joker or Batman mattered, because he was going to do his duty and avenge the All-Caste who had trained him, and stop the Untitled that they had protected the world from. Best moment in the series so far.
Roy taking on the entire League of Assassins to target the Well of All with an extra-miniature-missile-launching crossbow. Special note should go to him effectively neutralizing or bypassing all but one of the LOA's Badass Abnormal members, all while running on almost no sleep and the ever present fear of failure and loneliness.
Said moment is then matched by Ra's Al Ghul revealing he manipulated the Untitled into opening the Well but failing to seize it so he can then step in, take a bath, and reassume leadership of the League of Assassins.