Dieter begins his slow crossing, trying to move silently (DEX check, d20, 2, SUCCESS). The locusts start whining again, very loudly. They get agitated and start flying about. (d4,3) Three of them careen in Dieter's path (d20x3, 16, 10, 8) one of them slamming into his face, hard (dmg d4, 1).
Dieter high-tails it. The locusts are even more agitated now and (2d4, 7) seven more of the huge bugs fly into Dieter's path, (d20x7, 19, 11, 6, 15, 12, 1, 19, FIVE hit) five of them slamming into the magic user (dmg 5d4, 1 + 4 + 1 + 2 + 3 = 11). Dieter is knocked to the side of the berm (DEX check, d20, 8) but manages to catch his balance before falling in.
He makes it to the other side, battered and bruised. The din of the locusts dies down (secret roll) but they have attracted friends. Four BUGBEARS come from behind while the drama with Dieter goes on. (secret roll) They surprise you and move in to attack.
The first swings (BB1) at Einar (d20, 5, MISS) but is wide of the mark.
The second (BB2) attacks Grimes (d20, 14, MISS) but his strike glances off the halfling's armor.
The third (BB3) goes for Furuk (d20, 13, MISS) but can't hit the half-orc.
The fourth (BB4) tries to cut down Dandy (d20, 2, MISS) but the cleric is too crafty for him.
Dieter made it across, badly buffeted by the locusts. And now bugbears have attacked. Now is the the time for...
Actions?
Hit points and marching order
Grimes 31/34
--Furuk 36/36
Dieter 6/18
--Dandy 23/23
Einar 11/11
OOC: I'm surprised noone tried to put away Dieter's light source, or throw it across the cave to the others.