[Gaunja]

For LGuk here is what i've been doing. Unfortunately you have to crawl with your group

30-35ish = Bedroom
Break in to room (3 spawns).
Aggro x2 frogs on left for next pull
Aggro x1 frog on the right for next pull
Pacify pull (or root CC or whatever) the rest of the bat room.
Move into batroom, pull the two first spiders to the right
Move into the spider tunnels and have group wait outside the x4 spider room
Pacify/root/mez pull that room and clear it, med up in room
Pull the x2 bats in the next room
Move group up and root pull the x2 spiders around the next corner
Move up toward gargoyles, and pull the x3 gargoyles
Run back to bedroom. Rinse and repeat.

If your group can kill more faster, great. Do more, but I found this extremely effective, even almost up to level 40 with a full group. It's more exciting and keeps your group more alert with the crawl.