One derro, now bound and gagged, has survived the battle.  

derro:  (screaming muffled obscenities through his gag)
Autumn:  (rolls over and peers at the derro) Would someone shut him up?  
  I've had it with derros.
Tasencia:  That's "derro."
Autumn:  Huh?
Tasencia:  The plural form of "derro" is--
Autumn:  Never mind. (she tries to get comfortable on the cold floor)
Alenniel:  You know, we might as well get information of him how that
  he's awake.
Rimli:  Aye... leave tha' t' me. (he approaches the angry derro)
derro:  (glares at Rimli with pale, pupiless eyes) Mmmmff!
Ajax:  Aren't gags just great?
Rimli:  (to the derro) Now you listen t' me, lad... we jus' wanna ask ye a
  few wee questions, ya ken?  An' if'n ye answer 'em fine, we won' hurt
  ya.  Unnerstand?
derro:  (still glaring at Rimli, he nods)
Rimli:  Right.  Now... where're you lot from? (he removes the gag)
derro:  Ptui! (he spits in Rimli's face)
Rimli:  Oy!  Tha'll be enough o' tha'!  See this Elf here? (he points to 
  Ozzy)
Ozzy:  (smiles at the derro)
Rimli:  'E's got a problem, y'see.  When a fight starts, well... 'e jus' 
  can't 'elp 'imself.
Ozzy:  Not that I want to.
Rimli:  Aye, exactly.  I wouldna 'arm ya, see, but 'im... well, there's jus' 
  no tellin' wha' 'e'll do if ya start gettin' ornery.  D'ye ken wha' I'm 
  sayin' to ya?
derro:  I'll not be intimidated by a filthy surface dwarf and a weakling
  Elf!
Ozzy:  (visibly angered by this) Grr....
Rimli:  (angry, but trying not to show it) Lemme put it to ya this way, 
  lad....  Look around.  We got 'em all, see?  Yer all alone.  Eight o' us, 
  one o' you.  Ye don' stan' a chance.
derro:  (says nothing)
Rimli:  So... what're you and yer puke kind doin' 'ere?
Tasencia:  (rolls her eyes)
derro:  I wouldn't tell you even if I knew.  The master had a good reason.
  And my "puke kind" will decimate you topdwellers one day soon.  We 
  will crush you like the--
Rimli:  Alrigh', I get th' gist.  Are there any more o' ya lurkin' about 
  'ere?
derro:  (he smiles unnervingly) I don't know.
Rimli:  Don't know?  Ye don't know, or ye won't say?
derro:  What difference does it make?  You're wasting your time.
Rimli:  Wha' about Dark Elves?
Tasencia:  Drow...?
derro:  If there were Drow near here, they would be ours.  We would've
  made them our footmen.  They would've fought beside us, under our 
  Master's command, and--
Rimli:  Shut _up_!  'Ow did you lot get 'ere?  An' where the bloody 'ells
  are we?
derro:  (he laughs out loud) "Where are we"?  Ha!  Fools!  Our master knew
  exactly where we are!  You incompetent fools are lost!  You would've
  been better off as our slaves!
Rimli:  I've 'ad jus' about enough o' you!
derro:  (still talking, almost to himself) Slaves to our master! (his voice  
  drops low) And he'll be back....  He is not dead.  Oh, no....
Alenniel:  (looks down at the derro leader's bisected face quizically) He
  looks fairly dead to me.
derro:  (his voice rises in intensity as he continues) No, he cannot die!  
  He is the master!  He is all!  This is all only part of his plan!  Soon he 
  will rise up and have you _all_ in shackles!  This is only a ruse!  
Ajax:  Man, this guy's nuts!
derro:  And _you_ will be the first! (he looks at Rimli) 
Rimli:  Not bloody likely, you filthy derro scum! (he grabs the dagger from
  the derro's belt and plunges it into his chest)
derro:  (expires expediently)
Tasencia:  That was _not_ the solution!  Violence is--
Rimli:  'E 'ad it comin', affer wha' 'e and 'is kind did t' us!  Justice 's
  served, if y'ask me.  Besides, 'e weren't talkin'.
Ozzy:  I agree with Tas.  That wasn't right.
Rimli:  (shocked)
Ajax:  (shocked)
Greythur:  (shocked)
Alenniel:  (shocked)
Tasencia:  (even more shocked)
Autumn:  (asleep)
Eagle:  (even more asleep)
Ozzy:  Yeah, _I_ wanted to kill that guy!  Weakling Elf, indeed....
Rimli:  'At's more like it.

With the interrogation done (permanently), you all settle in for a night of 
restful sleep surrounded by charred and mutilated corpses.

Tasencia:  Ajax, wake up.
Ajax:  (not happy about this)

If there's one thing worse than being woken up from a deep sleep, it's
being woken up from a deep sleep when you've been mortally wounded.  This
is an accepted fact among those who've been mortally wounded and
subsequently awakened to take their place on the night watch roster-- if
it even _is_ night.  Who can tell down here?

Ajax:  Damned Hextant... they could've put in some windows or
  _something_.... (he scratches his head groggily and wanders around 
  the large room)

Corpses.  How's anyone supposed to get any really good sleep surrounded
by a bunch of mutilated derro corpses?  Apart from Eagle, that is.  Not
that he has much of a choice, considering his wounds.

Ajax:  (kneels beside Eagle)
Eagle:  (sound asleep)
Ajax:  (softly) I know what you need.  Be right back. (he rises and tip-
  toes over to the pile of loot) Hmm... looking pretty bare here.... (he
  gathers a few gold coins quietly and creeps back over to Eagle) Here
  you go. (he presses the coins into Eagle's unresponsive hands and closes
  his fingers over them)
Eagle:  (smiles slightly in his sleep)
Ajax:  Sheesh... he's even greedy asleep. (he sits down beside Eagle and
  draws his knees up to his chest)

The watch passes unevenfully, and, after a while, you wake up Greythur.

Morning, if it is really morning at all, finds you sore, uncomfortable, and
glad to be alive.

Eagle:  Urgh.... (he tries half-heartedly to sit up)