If you have a group that has rogues, barbarians, rangers, or any other melee character, assigning the rogue to "DPS" the elemental lt. in part 2 is probably not the best choice.
If you need help understanding this please read the following about sneak attacks.
"The rogue has the ability to deliver a sneak attack whenever an opponent loses its Dexterity bonus to Armor Class (i.e., when the opponent is flat-footed or flanked or cannot see the rogue). The rogue can then take advantage of this momentary weakness to strike at a vital part of the anatomy (provided the creature has a discernible enough anatomy to suffer a critical hit)."
IE. Not an elemental.
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