Just started playing this game, and the tutorial wants to introduce you to elemental attacks with these ice elementals that are immune to physical damage.

The problem I'm running into is I run out of rage before the last ice elemental is dead and it hides behind walls and the ground. I can't build rage because there are no targets.

Getting hit gives me just enough rage for a fireball, but the ice elemental only attacks occasionally and always dodges straight into the ground or a wall at the same time so I can't counter-attack, and then the rage bleeds off long before the elemental shows itself again for a second attack.

I can't progress. Please help.

(edit) Nevermind. There's a mechanic where you can just hold down the spell button and if you're out of rage, it gradually generates, or, something.