Looks like Batman is about to die, but it has a high possibility of it being a Stage Transition (Stage Transitions can go bottom), we also saw Wonder Woman being hit by train, she could die there too. But I think it's kind of silly to have that dramatic of a stage transition, that ship was fucking huge, Lool.
That specific scene looks like in game graphics, this assuming NRS is going to go MK9 route and have in game graphics as cutscenes, it can be Batman about to die [than maybe Superman can come and save him and they end their fued on the whole Batman vs Superman theme], or it can be a transition, I hope this game actually has true cinematic cut scenes outside the Intro.
My third guess is they're going for something like TDKR, where the audience thinks he dies but than figures out he's alive at the end. I want them to kill Batman, than maybe someone from DC can bring him back to life, someone that can revive? Than leave that character as a Cliffhanger, like they did with Shinnok. Who in DC can revive that's well known?].