Off the top of my head:
1st quest - About 80% copy/pasted fights.
2nd quest - First half of the dungeon is pretty unique. Second half is all copy/pasta.
3rd quest - There's the warlock, the uh...scorpion thing I guess and the final fight. Everything else is copy/paste.
4th quest - Pretty well designed, best of the bunch though there's an entire section of the dungeon that is pretty obviously unfinished (sleeping quarters). It's just 4 GIANT empty rooms with like 4~6 mobs standing on top of each other.
5th quest - There's like...8 mobs in the entire zone not including the last fight and even then the last fight is just a copy/pasted pack from Q2.