The movie was indeed full of action and gore, few characters have stand out and others just there to be killed, lots of unusual dialogues, trying to be funny scenes, and most of all, the stupid scenes:
1. After getting the head of the queen, why not just leave since you're outside already?
2. Why not Bly Tanaka just orders them to take the Queen's head?
3. Why not the army guys drive off instead of running away?
4. What happen to the girl saved by Scott's daughter?
5. Why is there a robot zombie?
6. Omari Hardwick carries a Big Saw but never use it at the end
7. Bly Tanaka owns the casino but ordered them to crack the safe?
8. The stupid daughter
9. Alpha climbing a replica of Statue of Liberty but can't climb a wall of containers