Continuity mistake: Two agents show up at Professor Wahl's door. Marlan Clark introduces himself taking his sunglasses off with one hand, which becomes two in the reverse shot.
Continuity mistake: The topless blonde assassin knocked out by Wayne appears dead a few scenes later over a puddle of her blood but with no visible wound. She is trying to get up when Marina appears to pick up a gun and taunt Wayne who's dealing with the other nude assassin, only to still be lying down a cut later. Marina could have shot her dead at this point, but doesn't and therefore the blonde's death makes no sense. The assassins' corpses are also lying in different positions than before. (00:44:34 - 00:51:13)