Goofs

The same bearded villain dies twice. Once in the shootout at Ah Jong apartment and later in the shootout at the church.

During the attack at home, bullets from the machine gun riddle the bed, but the gun is pointing in the wrong direction.

During the dragon boat festival, Jeffrey is wearing sunglasses, but the POV shots when he looks into the scope of his rifle do not take account of this.

When Jeff goes to the back room in the first gun battle at the bar, a man takes aim at him from behind the bar counter with a shotgun. Jeff turns his attention to another man with a gun, and then looks back to the man behind the bar, who is seen putting the shotgun into firing position once more.

The same boat appears twice behind Jeffrey at the docks while he's calling Jenny.

During the church shootout, Inspector Li tells Jeffrey that he doesn't know his name; while he uses the nicknames "Jeffrey" and "Mickey Mouse," he doesn't know his full Chinese name.

The road sign board pointing to the hospital says "SCARED HEART HOSPITAL".

The very same bearded villain died twice. Once in the shootout at Ah Jong apartment and later in the shootout at the church.

When Jeffrey is analyzing his 9mm Beretta alone in his apartment, a close-up of the gun reveals a small hole in the top of the barrel for gas to escape. This would only be on a blank-firing only weapon.

When people get shot, sparks can be seen coming from the bullet wounds. Since the impact of a bullet upon flesh or clothing does not produce sparks, this is evidently the result of a small explosive charge to create the effect.

After Jeff reveals he unloaded his Taurus PT92, he drops a handful of bullets on the table. Most of which do not match the Taurus PT92.