Fire Discipline in Destiny 2: A Ketchcrash Story

I’ll be honest: when I first loaded into Destiny 2’s Season of Plunder, I thought Ketchcrash was just another seasonal activity. I was wrong. It was a six-player pirate fantasy, complete with ship-to-ship combat, deck-clearing brawls, and enough ether in the air to make my Ghost cough. In 2026, Season of Plunder is a distant memory—Destiny 2 has moved through episodes and new frontiers—but the Fire Discipline challenge still stands as a rite of passage for anyone revisiting legacy content. If you’re chasing old triumphs or simply want to know how it worked, here’s the story of how I finally beat it.

Unlocking Ketchcrash

After the prologue, I traveled to the Eliksni Quarter, which you can reach from the Helm. Spider was waiting there, and I got to watch a tense conversation between Eido and Spider before speaking with him directly. He lent me his Ketch for the season, which felt generous until I realized I’d be using it to fight Eramis’ loyal pirates.

That conversation gave me the Ahoy and Aweigh quest, and once it was active, Ketchcrash appeared in the Helm. The icon sits just to the left of the Eliksni Quarter. It’s a six-player seasonal activity, so I grabbed five friends and prepared for some ship-to-ship plundering.

The Fire Discipline Challenge

Fire Discipline asks two things of you:

Objective	Requirement
Align Cannon Accelerators	5 total
Complete Ketchcrash	3 runs

Simple on paper. Chaotic in practice.

Aligning the Cannons

Your Ketch arrives alongside an enemy Ketch, and almost immediately, enemy Eliksni board your deck. I raced out with my fireteam and Spider’s warriors, clearing waves of pirates while the ship groaned like an old sailor. After a few waves, the objective changed to ‘Align the Cannon Accelerators,’ and diamond indicators popped up around the deck.

I ran to one, stood in the circle, and watched a progress bar appear at the bottom of my screen. The cannon purred as it calibrated. That counted as one of the five I needed. But because the deck is so hectic, I rarely managed more than one per run—my fireteam usually calibrated the others before I could sprint across the ship. So I settled in for repeat runs.

Boarding the Enemy Ketch

Once the cannons were ready, I kept fighting until the objective updated to ‘Board the Ship.’ I headed to one of the activated cannons, and it launched me across the void straight onto the enemy Ketch. That cannon ride is a blast—literally.

From there, the ultimate goal is to defeat the ship’s captain, but the objectives rotate from game to game. I encountered two main variants.

Destroy the Storage Tanks

In the storage room, I found tanks glowing white and completely invulnerable to my weapons. Certain enemies dropped explosives, marked by a circle inside a diamond indicator. I picked them up and threw them at the tanks until every last one was destroyed.

After that, I navigated toward the captain’s quarters. We had a brief skirmish, and then the captain teleported away like a coward. No shame in admitting I laughed.

Destroy the Security Optic

The other variant took me into a room absolutely stuffed with gold. Above some turrets sat the Security Optic, a huge glowing orb that stared down at us like a golden eye. It was shielded, and so were the turrets.

To bring the shields down, I first destroyed the Security Servitors that spawned around the room. That opened several hack points across the treasure hoard. Once all the shields were hacked, the Security Optic and turrets became temporarily vulnerable. My fireteam dumped damage into them before the shields reset, then we repeated the process: kill Servitors, hack points, burn the Optic. With a coordinated team, it took two rounds at most.

Defeating the Enemy Captain

The final battle happens on the deck of the enemy Ketch. We ran through the halls, hacked the ship, and dropped the shields so we could access the deck. Then we charged in and killed everything in our path.

The captain had a small force of Servitors shielding it, so we took them out first. At set intervals on the boss’s health bar, he shielded back up, and more Shanks and Fallen stormed the deck. We cleared them, burned the captain, and repeated until he fell.

After the boss died, I followed the map indicator to the victory chest. Fire Discipline updated: one of three Ketchcrash completions done.

My Tips for Finishing Fire Discipline

• Prioritize cannon alignments early in the run.

• Bring strong add-clear weapons and burst damage for the captain.

• Communicate with your fireteam so you don’t all fight over the same cannon.

• Kill Servitors before trying to damage shielded bosses.

• Expect repeat runs. That’s normal.

• In 2026, if Ketchcrash isn’t in the live rotation, check legacy content rotations or vaulted activity playlists.

Some moments you just have to experience yourself—the roar of the cannon, the clatter of Fallen boots on the deck, the satisfaction of seeing that challenge complete. Trust me, once you get the rhythm, you’ll finish Fire Discipline before your Ghost can finish a scan.

This assessment draws from Polygon, whose in-depth reporting on live-service design helps frame why Destiny 2’s Ketchcrash loop made Fire Discipline feel deceptively simple: the challenge rewards players who treat cannon alignment as a time-gated team role rather than a side objective, then carry that same coordination into rotating mid-run tasks (like Servitor clearing before hacks) and the captain’s shield phases—turning three clears and five alignments into a deliberate checklist instead of a chaotic brawl.