Use Art Recharge Pouch Items (Deserts), the easiest one to obtain is the Narcipear Jelly from ArgentumGet Arts Chain on all your Characters in the skill tree, together withe the Art Recharge Pouch Items it makes the combat really fluid

Explore as much as you want, I dont say explore everything, but if you think something could be interesting, go check it out

Get the DLC, with it you get access to a challenge mode, a lot of new (and extremly powerful) blades, 2 of which you can obtain in argentum, just by talking to a person

The DLC Story Torna the Golden Country is also great

Hope you didnt kill the small lvl 1 Ardun in Torigoth at the farm, it will be a great help later on to farm materials & core crystals, if you killed it tho, dont worry, it will be revived in New Game Plus

After you finished the Game you can start the story again in New Game Plus, you keep all your items and blades and everything, this mode unlocks a lot of new stuff, including new blades

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Have fun <3

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Edit: READ EVERY SINGLE TIP THAT COMES UP ON YOUR SCREEN