I just have a couple more to add, to go along with the ranged tactics.
- If there's a cleric in the group of kobolds, here's one to shut them down
. Have them land in some immobilizing traps - could be a bear trap or similar. Then have the cleric cast Silence on a crossbow bolt and fire it into the ground near the PCs. Not only is there no save for this effect, but they can't leave it without abandoning one or more party members and with all the bolts flying at them there's no way to tell which has the spell on it.
- For bolts tipped with poison or excrement, don't forget to have at least one sorcerous archer. He doesn't fire as fast, but every other round he casts True Strike. Also a good choice for a potion maker.
- If there's a cleric in the group of kobolds, here's one to shut them down

- For bolts tipped with poison or excrement, don't forget to have at least one sorcerous archer. He doesn't fire as fast, but every other round he casts True Strike. Also a good choice for a potion maker.