The four heroes and tactical training: Scout the next battle before you prepareMinor spoilers
Check enemy ranges and classes, then attack from safety. Divide your limited preparation time between training, recruitment, and exploration according to what you need.
Original video: What do you actually do in Fortune's Weave? Four heroes, branching stories, and tactical training | Bilibili creator YT Daer
What each hero hopes to win
The Heroic Games promise to grant the winner's wish. 
Cai wants to rescue his imprisoned father, 
Dietrich wants to challenge powerful opponents, 
Theodora bears the mission of restoring her country and her faith's reputation, and 
Leda is hunting her father's killer.
Yet the story actually opens five years later: all four heroes are dead, and the world faces a crisis. As the Promised One, 
Eshmel can borrow the time god's power to return to the past. Taking the form of a white bird, you approach the heroes, intervene in crucial choices, change their fates, and then face the enemies five years ahead alongside your companions.
Use range differences to attack safely
Choose your deployed units before battle. Blue shows movement range, and red shows attack range. Mobility and reach vary by class, and flying units can take routes that ordinary units cannot.
The enemy acts after your side, so check enemy ranges before moving as well. Initiating an attack can still invite a counterattack. Strike from beyond your target's reach to chip away at their HP safely. In Classic mode, a dead unit cannot fight in later battles. You can use Rewind to return to an earlier action and adjust your plan, or select a more forgiving mode when starting the game.
Weapon traits and the cost of combat arts
Gauntlets favor Avoid, while axes deal high damage per hit but miss more easily. Account for those traits when choosing targets. Bows against fliers, lances against cavalry, and magic against armored units are all matchups to consider when assigning attacks.
Combat arts can add damage or extend range. Sometimes switching arts lets you reach a target that was one space too far away. They cost weapon durability, however, and you cannot keep relying on a weapon after its durability runs out.
The four protagonists can also spend HP to use Blaze Arts: Cai deals area damage with underworld fire, Dietrich moves across terrain, Theodora launches an extremely long-range attack, and Leda can summon beasts or support allies through performance.
Blaze Arts cost HP. Make sure you can still survive the enemy's next hit afterward.
Plan training around the enemy's classes
Classes determine stats, usable weapons, and movement types. Training lets you develop characters in different directions. You can inspect the enemy classes in the next match before it begins. Identify the problems you need to solve, then plan that chapter's training.
In town, you can train each week, accept quests, shop, and meet potential companions. Gifts and shared meals build relationships; fighting together and applying buffs also increase support. Exploration takes time too, so decide whether you are looking for equipment, gathering materials, or fighting for levels before you head out.
Find resources through your route's specialty
Dietrich can find hidden enemies, Theodora recruits battalions and sends soldiers to gather resources, Cai catches animals, and Leda performs in different locations. Outside town, you encounter tactical skirmishes, while encounters in labyrinths switch to turn-based combat. Consider both your route's specialty and the resources you need on this trip so exploration feeds into character development.