Hrus:I can't help you at close range. You'll just have to grit your teeth and take them on. At long range, though, you might try the following trick:
The Hrus are in a group, right? And they're out for blood, correct? OK--teleport to the other side of the dungeon. Hrus can only spot you from 300 feet away--that's 30 squares. So go within 30 squares of the group until they start to chase you (you can tell even if you don't have ESP since the walls start dissolving), then hightail it in the opposite direction (by foot, not teleport). Now wait for them to come to you. If you did the trick correctly, only the Hru in the group that's closest to you will have noticed you and come after you. Kill him, then repeat.
This trick only works if A) you're faster than a Hru, B) you're sure you can take one out

and C) the monsters are clustered in a group.
Also works with Nightcrawlers, Balrogs and Morgoth
