Odo the Blindwatcher

Battlements
Climb from the chapel toward the battlements and approach Odo with room to separate the bats' victim from other players. Take Odo and his Vile Bats as one fight, but finish the bats before Howling Rage strengthens their attacks along with his.
Odo the Blindwatcher
Elite HumanoidOdo rewards killing the Vile Bats before Howling Rage increases their Physical damage along with his.
Abilities

Howling Rage
Howling Rage strengthens Odo and nearby bats. Finish the bats first and save tank defenses for the stronger casts later in the fight.
Tank- Hold Odo and his Vile Bats together long enough for the group to finish the bats, then use defenses as Howling Rage raises Odo's melee damage.
Healer- Budget mana for the later Howling Rage casts; Odo's victim needs more healing after those increases than during the opening bat kills.
Damage- Kill the Vile Bats before Odo so Howling Rage does not leave several strengthened attackers alive. Use offensive cooldowns to shorten his stronger melee phase.