Continuity mistake: After Lex blasts Doomsday through a globe statue into some steps, and then flies over to him to smack into him some more, it shows the rubble around Doomsday. In the close up, the damage around him and amount of rubble decreases. (01:04:15)
Continuity mistake: When Jason lunges at Batman with his knife, there is a pile of garbage by the wall where he lands. In the first shot the barrel by the garbage is wooden. But in the next shot it's suddenly a metal barrel/drum. It then changes back to a wooden barrel again. (00:04:20)
Continuity mistake: After the old lady thanks Dash for saving her from getting crushed by the flung blue vehicle, that vehicle suddenly has been moved slightly to the left from its original landing spot. Also, another wrecked light blue vehicle was visible as the aforementioned blue vehicle hit the ground, after the old lady thanks Dash, it has suddenly been replaced by a white wrecked vehicle instead. (00:05:45)
Continuity mistake: Constantine wakes up from a nightmare and sits up in his bed clutching his head. The window beside him has the blinds wide open with Big Ben seen through the window. But in the next shot suddenly the blinds are down covering a lot of the window. Also his bed posts change shapes. (00:03:10)