Ubisoft released the final major update for Assassin's Creed IV: Black Flag Resynced, finally introducing a New Game+ mode that the original 2013 game never had, alongside a demanding new difficulty called Nightmare.

After finishing Edward Kenway's swashbuckling naval journey, players can restart their adventure while keeping most of their accumulated progress. Retained elements between playthroughs include all of Edward's tools, upgrades, unlocked weapons, trinkets, and customizable outfits. For the Jackdaw, weapon and armor upgrades carry over, along with unlocked officer abilities and pets, although crew officers must be physically recruited again out in the world. Players will also retain all currency, crafting materials, trade goods, ships in Kenway's fleet, hideout progression, and Codex items, including completed treasure maps.

However, the mode comes with sensible restrictions: quest-specific items are removed from the inventory, map fog resets, and naval forts must be recaptured. To reward returning sailors, the patch introduces an exclusive currency for New Game+, earned by completing challenges and looting old chests, which unlocks brand-new outfits and cosmetics unobtainable during a standard first playthrough.

Assassin's Creed IV: Black Flag Resynced receives its final big patch and adds New Game+

Stacking difficulty and the Nightmare mode

To prevent fully upgraded players from feeling excessively overpowered, the challenge scales with every run. In each subsequent New Game+ cycle, elite soldiers spawn far more frequently and max-rank ships sail the seas on regular patrol. This difficulty spike can stack up to five times.

Additionally, the update introduces the Nightmare difficulty setting, aimed at testing even the most experienced pirates. This modifier can be toggled across the entire game or applied selectively to three core pillars: ground combat, stealth, and naval warfare.

Under ground combat in Nightmare, enemies deal 1.8 times more damage, parry timing windows are substantially narrowed, and the white warning glint on incoming attacks is completely removed. Ranged adversaries shoot more frequently, and the one-shot kill safety threshold is disabled, meaning gunshots and explosives can eliminate Edward instantly regardless of current health. In stealth, detection windows are sharply cut, enemy investigation times are extended, and guards detect footstep sounds whenever moving faster than a walk. To remain concealed from vantage points, Edward must now be at least six meters above foes instead of the usual four. On the high seas, all ship damage is increased, while diving and harpooning encounters become harsher as sharks, jellyfish, and sea urchins deal heightened damage alongside a faster oxygen depletion rate.

Assassin's Creed IV: Black Flag Resynced receives its final big patch and adds New Game+

Technical fixes and final support

This concluding patch also restores finishing takedown animations from the 2013 original that were missing in the remake, while resolving a long list of technical bugs. Key fixes address launch issues in offline mode when server communication drops, crashes during tavern minigames like checkers or Morris, and camera field-of-view bugs indoors following delirium sequences.

Furthermore, Ubisoft resolved progression blockers across naval contracts and side quests, including Templar hunts and officer tasks, while also dialing up the spawn rate of rogue waves during tropical storms. With this farewell update, Edward Kenway's revamped voyage concludes its active support cycle by fulfilling one of the community's longest-standing wishes.