So waiting for Dragon born dlc became so worth it, as I experience amazing battle with Mirrak. So has I got off the dragon and heard Mirrak speech I got everything ready and we started fighting; I shouted Dragon aspect with my daedric armor on and we started hurling spells at each, like for example I threw fireball after fireball while he shock me with lightning attacks then I use unrelenting force(the improve version) on him few times. Soon he started healing and after that he started attacking me again, but as my health got low my dragon aspect shout summon some kind of void dragon armor thing and it started whacking Mirrak and he started attacking it. So eventually he healed himself one last time and I decide to end it once and for all with 2 high level fire attack and full on powerful unrelenting force. Then he got stab by Mora and in the end I got bunch dragon souls(33) and I unlocked mostly all my shouts. So that was my epic battle with the first dragon born.