I mean, NiN and industrial in general has many elements in common with it...
I dunno, its less ... orthodox, in time signatures, than basically all NiN I can remember listening to, with the exception of Ghosts.
Ghosts has a lot more just... weird timings, but they're also paired with melodies and chords that are dissonant or off in some way...
Not much of Ghosts is high tempo, 'action-y', and HL2's melodies are actually not as odd and dissonant, they're more conventional, just often played with unconventional instruments/synths.
And, NiN's drumming, cymbals and such is usually nowhere near as frantic.
... Maybe I just don't have a wide enough industrial palette, and I guess maybe yeah, 'HL2 style' is best described as a subgenre of industrial?