Great game. One of the best I've played in a long time. 150 hours for me, too.
I'm on a crazy work schedule and sometimes only got to play late at night. The guys I was matching up with were awesome (Japan/Korea maybe) and I learned a ton from them. As the hunts get tougher, everyone needs to really know their class, and group survival was key.
They were putting two or three health boosters down in a triangle and having their tanks engage the monster there. DPS guys were doing damage, flanking, distracting, and setting traps. The ranged guys were healing, taking power shots and knocking people out of stun. You felt like a badass crushing a tough monster in 10 minutes lol.
Huge difference when playing with a group that's disorganized and everybody is just trying to get theirs and not die.