Cookie

Ironclad Cove
Follow the docks to Mr. Smite at the boarding ramp before climbing the ship. Cookie is an optional lower-deck detour. Continue upward through Captain Greenskin, clearing his group before approaching Edwin VanCleef above. After VanCleef, leave through the passage behind the ship and meet Alba outside if you planted the forge explosives.

Cookie
Cookie prolongs the lower-deck fight with Cookie's Cooking while Acid Splash damages nearby players.
Abilities

Cookie's Cooking
Interrupt Cookie's Cooking so the self-heal does not undo the group's damage.

Acid Splash
Keep ranged players back from Cookie to reduce the group exposed to Acid Splash.
Tank- Engage Cookie on cleared lower deck without drawing the groups above. Keep an interrupt available for Cookie's Cooking if your class can stop the cast.
Healer- Heal from outside Cookie's close-range Acid Splash and watch the players who remain near him. A completed Cooking cast extends the fight and its healing cost.
Damage- Assign an interrupt to Cookie's Cooking. Ranged damage should stay back from Acid Splash rather than joining the melee group around Cookie.