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Assassin's Creed Black Flag Resynced: Achievement : Unsinkable (+ Last to Leave)
Short answer
Objective: Survive a rogue wave that hits your ship from the side.
Steam Community guide by FairyStick.
100% Rogue Wave Method
- Fast travel to The Black Trench.
- Sail to coordinates 94,234.
- Drop anchor and wait for a storm to begin.
- A rogue wave will spawn. Make sure it hits your ship from the side to unlock the achievement.
If no storm appears
- Fast travel to Great Inagua.
- Return to The Black Trench.
- Repeat the process until the storm starts.
Important
- Do not get too close to the shoreline.
- Do not leave the ship's wheel to walk around the ship or enter the captain's cabin while waiting for the rogue wave.
When this happens, the weather is usually reset, the waves disappear and the ocean becomes completely calm.
To avoid this, simply drop anchor and remain at the ship's wheel while waiting for the storm.
Bonus : Achievement - Last to Leave
Objective: Take a seat on a burning ship.
- When you fast travel to The Black Trench, you may find a burning ship nearby.
- If the ship doesn't have a chair, fast travel to Great Inagua, then return to The Black Trench.
- Repeat the process until a burning ship with a chair/table spawns. Alternatively, reload your save before fast traveling to The Black Trench.
- Board the ship and sit on the chair to unlock the achievement.