Continuity mistake: In the scene where Blade and the Bloodpack go to the club to find reapers, there is a clip where Lighthammer and the girl go into an area by themselves. When it shows the two, the girl has a blue light filter on her gun, but when cuts back to her, there isn't any filter on it. (00:40:02)
Continuity mistake: When Blade meets the Bloodpack for the first time, everyone is introduced by name. When they introduce Snowman (the swordsman), he does a gesture with his right hand. In the very next shot where they show Chupa, Snowman's hand is already back to the handle of his sword. He may be fast, but he's not that fast.