Second Wind is a mod project that contains a variety of new content designed to be played on top of a vanilla Breath of the Wild experience. Below are details on all the elements that are part of this project.
Please note, as this project is still in development many aspects listed below are either not available or finalized and there’s a possibility they will be removed in the final release. See Project Progress.
After installing the mod, players will notice the Second Wind logo on the title screen replacing the vanilla Breath of the Wild logo. The version number will also update corresponding with the current build of the Mod installed. Players are able to use the mod regardless of the current state of their current save, however some events can only be experienced with a new save.
Labours of the Hero
Main article: Labours of the Hero
Labours of the Hero is a large scale quest triggered after obtaining the Hylian Shield. Link must face off against 13 bosses and will obtain an upgraded version of the Hylian Shield as a reward. This quest introduces various new areas such as a revamped Oakle’s Navel, The Royal Crypt, The Abandoned Mines, Roc’s Tower, and the Ancient Trials Shrine.
Ordon Village
Main article: Ordon Village
Named after the village from Twilight Princess this new area provides unique quests, NPCs and acts as a hub to many of the new content expansions including Labours of the Hero, The Blacksmiths, Food Expansion and the Wildlife Expansion.
Chest Fix
In the overworld there are 5 treasure chests that are bugged in some form. Either they are impossible to obtain due to their location, are placed in such a way it would take an hour to excavate or the chest is positioned in some way that the treasure sensor cannot pick it up. This mod fixes all those issues to enable the player to find and open every single treasure chest in the game without any issues.
source
https://www.youtube.com/watch?v=nKFgaXBT0rU