For defeating the elusive Shadow demons and the somewhat less elusive drow you each receive 3000 experience points
Treasure was:
Shadow Demon Lair: +1 studded leather armor(x2), +1 buckler, MW rapier, +1 mithral shirt, large steel shield, +1 rapier, MW breastplate, MW greataxe, MW battleaxe, MW handaxe, Mighty MW comp longbow(+4 str), 20 arrows, quiver, +1 mithral chainmail, +1 large steel shield, MW dagger, +1 cloak of resistance
Drow Sentries(x2) each had: +1 chain shirt, MW shortsword, +1 mighty MW composite longbow (+2 str bonus), cloak of elvenkind, potion of spider climb, between the 2 drow they had 9 doses of sleep poison.