BTW, One of the things I like about hackquest is you can do challenges in any order.
Dim5: I've played nethack a bit. I don't know anybody that hasn't gotten the amulet without cheating.
Peetster: If you haven't noticed, the challange titles are hints.
I did 'Linux 1' from hackquest friday morning before work. That was fun
Also, check out
http://hackergames.net/ , there's a bunch of challange sites there.