Overview
- Sea Change is one of the daily missions for heroes in the Ace Chemicals Clean Up Effort set from the Home Turf episode. It requires a combat rating of 60+.
Intro
- Help Steelworks and Envirotech stop T.O. Morrow from polluting the beach at Ace Chemicals.
Objective
- Locate and speak to HAZMAT Harding; Defeat the goons that are dumping chemicals [0/8]; Defeat the chemoids on the beach [0/3]; Tag the floating chemical containers for pickup [0/4]
- Locate and speak to HAZMAT Harding
- Search the beach and defeat the mutated alligator known as Lockjaw
- Return to the Steelworks Communication Foreman near Ace Chemicals
Combatants
- Ace Lieutenant
- Ace Slasher
- Cryo Chemoid
- HAZMAT Harding
- Lockjaw
- Pyro Chemoid
- Shock Chemoid
- Steelworks Robot (Black)
Source wiki detail links (5)
Ace Lieutenant · Ace Slasher · Cryo Chemoid · Pyro Chemoid · Shock ChemoidSpeak to HAZMAT Harding
- Follow the Navigation Diamond (if it's active in Settings > UI) to the southwest portion of Ace Chemicals. HAZMAT Harding is across the street, near the water. Interact with him to proceed.
Defeat Goons and Chemoids
- Follow Harding's gaze until you reach the place where waves of goons are throwing radioactive substance containers to the water. You'll also find Chemoids wandering around the area. You need to defeat 8 goons and 3 chemoids. Have in mind that the goons won't attack you on site, but will fight back, while the chemoids are hostile.
- Note: The game doesn't differentiates the enemies in the mission area from the ones on at the main building, so all of the goons and Chemoids in the Ace area count for the mission.
Source wiki detail links (1)
radioactive substance containersTag Floating Containers for Transport
- Go to the west towards Arkham Island until you spot mutagen containers floating in the water. Interact with them to fire a flare, then a black Steelworks Robot will come to take them. Interact with 4 of them to complete the objective.
Source wiki detail links (1)
mutagen containersSpeak to HAZMAT Harding
- Once you defeat 8 goons and 3 chemoids, and finish with the containers in the water, go back to HAZMAT Harding and interact with him again.
Defeat Lockjaw
- Go north from Harding and go down to the beach. You'll find a big alligator that attacks on sight called Lockjaw. It has 3 types of attack: Slime Toss (ability), and bite and tail strike (both tagged as melee attacks). Defeated it to finish the mission.
Rewards
- 581 Cash
- Daily Reward Box
- Soder Cola Extreme
Feats
- Ace Chemicals Ace: In the Ace Chemicals, complete each of the following exterior missions (10 points):; Toxic Trouble; Outbreak; Morrow's Notes; Sea Change; Proportional Response; Dirty Job; Weird Science; Random Sample; Hazardous Material; Bridge to Nowhere
- Waste Disposal: In the Ace Chemicals, defeat 100 enemies (10 points), grants title the Exterminator
Source wiki detail links (13)
Ace Chemicals Ace · Ace Chemicals · Toxic Trouble · Outbreak · Morrow's Notes · Proportional Response · Dirty Job · Weird Science · Random Sample · Hazardous Material · Bridge to Nowhere · Ace Chemicals · titleFIND YOUR WAY
Edit map linksAce Chemicals
Precision: Source objective, route or mission introduction: Return to the Steelworks Communication Foreman near Ace Chemicals. No coordinates have been inferred. Location evidence.
Select a map to open the full-size image. Copies are hosted by DCUO Wiki; original sources are credited below.
Video walkthroughs
- DCUO DLC6 - Ace Chemicals Daily Mission: Sea Change
YouTube's title explicitly names Sea Change. Title and availability checked through YouTube metadata on 2026-10-21. Faction, route, current mechanics and timestamps have not been verified by viewing the full video.
- DCUO: Ace Chemicals - Sea Change |Part 6| DLC 6 |Hero|
YouTube's title explicitly names Sea Change. Title and availability checked through YouTube metadata on 2026-10-21. Faction, route, current mechanics and timestamps have not been verified by viewing the full video.