And terrorism again, just because of that part before breaking into nova prospekt where you shoot down planes (or whatever helicopter thing it is) from the bridge
Maybe illegal use of drugs too? Just because of the start of the game where you suddenly appear on a train with that really trippy effect
Not to mention trespassing, vandalism (lol I wonder why did they add the graffiti button in hl1), reckless driving (this one's on me, membrane keyboards suck ass), use of weapons of mass destruction (the rocket in hl1),...