This movie is so dumb. People just don't use their guns when they are to be used. There are many instances of this in the movie. The most moronic are these two:
1. In the last act when the shooters are being killed with a silenced weapon, all of them could have been killed including the mercenaries but the guy removes the silencer at the last moment and blows his position.
2. Then when the female lead who was just about to be killed was shielded by one of the good guys but before that she had to surrender her hand gun. Why didn't the bad guy use that gun when he ran out of bullets?
There are many instances like this in the movie which makes it so dumb and boring to watch.
The fights were really great but due to these things, the overall experience of the movie was spoiled.