Quick Answer

If enemies hit too hard, unlock Great Fairies and upgrade the armor you actually wear. Armor upgrades greatly improve safety before Regional Phenomena cleanup and deeper Depths exploration.

Unlock Logic

StepAction
1Follow the early story toward Lookout Landing and stables
2Watch for troupe-related stable quests
3Prepare basic materials and rupees
4Upgrade your main armor first instead of every piece evenly

Upgrade Priority

Armor directionBest use
Cold resistanceRito, snowy mountains, cold sky routes
Heat / desert gearGerudo and desert exploration
High-defense everyday armorStory combat and Depths safety
Utility setsUpgrade when a specific route needs them