This movie is a non-stop action thriller that achieved its level of fame by having a decent story and excellent fight choreography. It’s visceral and grimy in its realism, keeping most of the martial arts to what the actors can actually physically handle. Some of the fights have the one-at-a-time issue, but by setting most of the scenarios in hallways gives a practical logistical reason behind it and avoids breaking immersion. Instead, the viscerality deepens the immersion and keeps the tension right to the end.

Closest comparison: It’s like an Indonesian response to The Protector (2005).

Setting: Action
Plot: Action
Tone: Action Thriller