OK. Garren runs into the passageway and Lulu collects two thrown axes, meanwhile Orlok casts obscuring mist to cover your attack and then moves up in support.
You immerge in front of startled kobolds and attack. Lulu, 19, hit 2 damage, the wounded one goes down. Orlok moves after his spell and Garren attacks, 22, hit, erm...18 damage.
The kobolds are too surprised to fight back.
Round two.
Lulu, 8, miss, Orlok natural 1, miss, Garren, 17, hit for 10 damage, another one falls. The four remaining kobolds attack, miss lulu, miss orlok, miss and 19, hit Garren for 2 damage with a small spear.
Round 3, lulu 3, miss, Orlok 9 miss, garren 19 hit, dead. miss lulu, natural 20 &16, critical hit on orlok, total 5 damage (ouch!), miss garren.
Round 4, lulu 15, hit, 1 damage, orlok 6, miss, garren 20...dead.
The two remaining kobolds throw their weapons to the ground and beg for mercy in a clipped language.
I make that 2 live kobolds, Lulu on 8 hits, Orlok on 2 hits and garren on 13 hits.