It's not Die Hard 1 ... but it is very similar to Die Hard 3. Same type of story struction, McClaine + sidekick thing, running around a large area/city, etc.
Saw it ... liked it a lot. I still rate Die Hard 1 as the best obviously, with 2 second, and 3 + 4 basically a tie. I think this one has a lot of similarities with DH3 in that its set mostly in an open city. DH3 did definitely change the format a bit by making the villain's plot more of a...