Uploaded July 2026 | Updated September 2026, 2 weeks ago

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Looking for the Harpoon Strength Ultimate Plan in Assassin's Creed Black Flag Resynced? In this video, I'll show you the exact location so you can unlock the final Harpoon Strength upgrade and make hunting whales, sharks, and other sea creatures much easier.

If you're aiming for 100% completion or want to fully upgrade your harpooning equipment, this quick guide will help you get there fast.

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