c. Chapter three: Ravages of the Plague (ROCWH3)

Head back down the path to the right and then down at the end. Kill the two ogres for a potion of healing. Use Jaina's water elemental spell frequently. Kill the ogre to the right on the way out. Return to the starting area.

Head up the path to accept the first quest. Go left to a destroyed bridge. Head right and follow the path to encounter bandits. Defeat them and a villager will give you a potion of greater healing.

Continue north down the ramp and near the villager with an exclamation mark to receive the optional quest: Fountain of Health. Learn Jaina's blizzard spell.

Go left, down the ramp into the water, and defeat the murlocs. Continue forward, kill more murlocs, and destroy the hut in the top right to get a maul of strength for Arthas.

Follow the path through the water to the left. Before turning south, kill bandits to your left. Destroy the hut on the right after defeating them to receive a scroll of protection.

Head back out and continue south along the path. Take the ramp up on your left. Assist the footmen fighting undead archers.

After the fight, you control 3 footmen who learn the defend ability. Learn Arthas's next rank of devotion aura.

Continue left down the path to a potion of mana. Fight the undead. Summon Jaina's elemental and use blizzard. Learn Jaina's next rank of blizzard.

Continue up the path and left to reach the Fountain of Health and complete the optional objective.

Backtrack past the undead fight and take the path south for a cut-scene. Destroy the infected grainery and skeleton warrior. Continue south.

Destroy the undead (Jaina's blizzard is effective). Head down the path in the lower right and curve left to meet priests and complete the main quest: Investigate Villages.

Continue left and defeat the undead archers. Head south to control a mortar team. Remember mortar teams are biological and can be healed.

Go down the path on your left and down the ramp. Pick up the mantle of intelligence for Jaina. Learn the first rank of brilliance aura for Jaina.

Head north past the fountain for a cut-scene. Kill the abomination, then the ghouls. Destroy the grain warehouse to complete the main quest: Destroy Grain Warehouse.