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you can repair on the way with repair powder which drops in the early game area. later on, its not an issue since u travel back to town anyways to upgrade, sell etc.
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there have been several discussions about healing and healing timers. spoiler free: as u progress through the game u get more recipes and can just carry different meals that also buff your character. for the healing timer discussions, please have a look and share your ideas here:
Food cooldown feedback, suggestion to change
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healing can be less of an issue with the right enchantments. progress a bit through the game and experiment with enchantments. a “get HP on hit” built is imo currently the strongest built
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while i do agree, that the building timers are quite long, i personally never had an issue with it. i do not stand around an hour to watch it get build. i do some quests and exploring, or daily challenges, and when i come back everything is done.
and another thing a lot of people do not notice on their own: you can have multiple realms and switch them with your character basically any time from the main menu. i only have 1 main realm, with everything upgraded and storage, and multiple other realms where i only upgraded the merchant grinnich to check his inventory, since it is different in every realm.
hope this helps 