We just hit the spot in the cairn where the floor gives way under the green lantern and the geyser of carnivorous beetles erupts.
The PCs groaned/gasped in horror at encountering a swarm at level one with no AoE. The main tank, already hurt, went down really fast (unconscious), just after he poured some oil on the floor to try and stop the horde. He wasn't fast enough trying to light it.
The PCs really started to panic when the six-legged mad slasher showed up.
Anyway, to fast forward, the whole table was cheering when they managed to take out both the beetles and the mad slasher.
I let the tank use a hero point to stabilize versus trying to roll a 20 on his stabilization roll or die.