It is heavily inspired by the John Woo movies, with the protagonist being a Hong Kong cop who goes on a Roaring Rampage of Revenge against the triads after they killed his partner. He's been so successful at it that the game opens with him getting interrogated by his higher-ups about all the carnage he's caused. Then, the game flashes back, and lets you create that carnage yourself.
Tropes present in this game:
- The All-Seeing A.I.: Enemies detect you as soon as you enter the room, even if they had their back turned to you at the time.
- Bottomless Magazines: Averted. Moreover, you can never have more than one magazine's worth of ammo for any weapon, thus forcing you to regularly pick up the guns of fallen enemies. However, you do get to upgrade the weapons' ammo capacity.
- Bullet Time: The ability to slow time down is one of the game's core features. Its usage is limited by a meter, so you cannot deploy it all the time. However, each kill partially refills it, so you are encouraged to use your slo-mo time to immediately cause maximum carnage.
- Nevertheless, there's an achievement for beating levels without deploying it at all, which pushes the already-high difficulty even higher.
- Cut-and-Paste Environments: A good number of the environmental assets are recycled from building to building. This even goes as far as the paper shogi screens being used as internal walls not only in the mere office buildings, but inexplicably, inside a police station, for essentially no reason but to allow you to shoot and burst through them there as well.
- Dodge the Bullet: You have a dodge move, which changes depending on the context of the situation. The one constant is that you are completely immune to damage while using it. However, your enemies get to perform the exact same dodges, and they are just as immune to damage during them.
- Gameplay Grading: You get a star rating for each of the levels you complete.
- Guns Akimbo: Dual pistols are your starter weapon.
- Heavily Armored Mook: The enemies with body armour require two shots instead of one.
- More Dakka: The rifle already has more ammo in its magazine than any other weapon. Fully upgrading its ammo capacity gives you a whole 100 bullets to play with, which is invaluable, as you'll not get to reload it.
- Nintendo Hard: The game is already hard, and will get even harder if you try to go for any of its challenges.
- One Hitpoint Wonder: Your character always dies in one hit. However, the same applies to your enemies.
- Rooftop Confrontation: All of the five boss battles take form of these.
- Shotguns Are Just Better: One of your weapon options.
- Super Window Jump: You get to regularly do this, with no ill consequences.