Hey,

yesterday I've succeeded in defeating the Water Elemental on Core difficulty. The achievement "Your First Big Enemy" didn't trigger. Today I tried the following:

* reloading & defeating it again; succeeded in defeating on Core
* uninstalling & reinstalling the game
* starting a whole new game on Core
* after the reinstallation: defeating the elemental again

Nothing I did triggered the achievement.

I defeated the elemental right before going up to fight Hosilla.

Did I have to play the whole playthrough on Core from the beginning? 'cause I started out on Daring & switched up to Core an hour or so in, have been on Core since.

Thank you very much. Just reported it in-game.

And you did answer a question I hadn't actually asked but was surely thinking about: whether or not I should restart.