Caves of the Kobold Slave Masters

From his hidden spot, Vakas leaps at the demon, attacking him twice quickly with the Dragontooth dagger and then disengages from the beast, moving to cover (if possible) in the room.

Dragontooth dagger : 19 to hit, for 6 points of piercing damage, 6 points of acid damage, and 8 points of sneak attack damage.  

With the nick ability, he takes a second quick stab with it : 20 to hit, for 9 points of piercing damage and 2 points of acid damage.  

Total damage :  31 points 

Vakas you release a blur of violence upon the creature and it staggers back in agony. Thick viscus liquid pours from the demons open wounds and hisses as it falls upon the ground. There is nowhere to take cover within this space. Most of the furniture having already been dismantled to barricade the windows. 

Thannadol?

 Thannadol draws his wand in a smooth motion whirling to face the demon, with a quick flick he sends 5 bolts of force cracking into the hard shell (5 bolts, 5 force each: 25 Force DMG)
He then dances back a safe distance already chanting for his next spell