Wow, this movie is shockingly bad. The movie is full of plot holes and it's completely out of character with the original Die Hard. The direction is awful, the actors look like they weren't actually in the same room when they talk to each other (which is possible, but still not excuse for such poor performances), the cuts are jerky, inconsistent and sometimes out of sequence. The script is horrible, needlessly gimmicky and worst of all, completely uninteresting.
Oh, and the "I'm on vacation" line gets old after about the 23rd time he says it... AND HE WASN'T EVEN ON VACATION IN THE FIRST PLACE!
Btw. the most laughable plot hole, at least IMO is when they...
--SPOILERS AHEAD--
...steal a car from (most likely) the Chechen mafia and then decide to DRIVE to Chernobyl. The very next scene places them near the (usually completely closed down and under military surveillance) Chernobyl power plant That means they make a 13 hour road trip during which they have to cross the Russia-Ukraine border while still bruised and bloodied, and driving a stolen car with a trunk full of automatic rifles.