Adding RPG aspects to Quest is EXTREMELY complicated and definitely not for beginners. I recommend using Pixie's CombatLib as it provides easy to follow tutorials and has a variety of features for you to utilize. Here is the link if you'd like to check it out.
https://github.com/ThePix/quest/wiki
Hope this helps!
Anonynn.
you can also look at this too for ideas on how to do some of this stuff yourself (but I recommend using Pixie's libraries, as they're much better designed, as Pixie is a really good coder):
http://textadventures.co.uk/forum/quest/topic/3348/noobie-hks-help-me-thread#22483
http://textadventures.co.uk/forum/quest/topic/3348/noobie-hks-help-me-thread#22486 (key/legend: I've learned since to never do abrevs again)