Talked a bit about this in a stream chat, finally played it.
Feedback:
Movement is a *bit* slow, but this could easily be fixed by levels or pickups
Some spells seem very week specifically entangle, fireball and steam burst. Entangle hits on enemy, fireball same issue with weak damage, and steam burst puts you in melee. Entangle should hit at least 5 enemies, fireball should be a big explosion with knockback, and steam burst should be more of an escape.
The game got really hard really fast. I'd love some kind of upgrade system similar to VS or Halls of Torment.
Encountered a bug where enemies could push me into the walls. Then they couldn't reach me, so I could easily farm them forever.
Really fun base, especially with elemental weaknesses. I think you could turn this into a fun VS-like with some cool spell specific upgrades and stuff like that.