He makes for a fine meatwall, though. Skeletal Guardians and Lords are hellatough, and there's several in the catacombs that need dealt with. I'd just back up until lumpy got in the way, and let him get pounded. Once the Guardian was nearly dead, I'd bravely run in there and try to steal the killing blow.
Besides, skeletons just aren't worth that much XP; stealing the 100 or so XP on those probably won't make any difference when you get to level 50.
