I mentioned this a couple pages ago, I think that's archer since the classes never change just the spirit within them. Going by that it's safe to say that that's not Berserker or Assassin. That leaves Archer and Lancer and well Lancer fights with a lance while Archer is able to use both a sword and Bow. The move he uses in the very beginning is prob his phantasm using the bow. I expect a repeat performence with Rin and Shirou being the final two.