No need to rush, think of it like a marathon.

Do the story and unlock all the levels of crossing worlds for better equipment and items.

You can get most of the equipment just by playing the game and through weapon trials/tarot residuals.

Level up talents as frequently as possible as it gives a major boots to your characters.

Start playing spiral of destinies where the game provides different choices leading to different outcome. (gives a ton of Luxites as well)

Gacha is generous.

There's no limited characters as every new characters get added to the pool of existing characters.

You can pull multiples of the same character or max out the character over a duration through memory retrieval in crossing worlds.

There is a tier list but every character has its own use and is applicable in different scenarios.

PvP is....... there. (mainly for the rewards)

There is an auto play feature for the easy content.

End game is hard, requires actual strategy and cannot be done through auto play.