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.