I used to play this game on a coworker's phone back in ~2013 I think.

It was a hack-n-slash / dungeon crawler.
You played as a wizard, and you could choose your element at the start, upgrade your spells as you leveled up, and then choose another element.
For example fire then water gave you steam-based spells.
The game started in a cemetery fighting zombies I think ? And then you entered a tower and progressed from floor to floor.
There was a system where you could keep some equipment after your death for an easier next run.
View from above, pixel-art-like, looked like pixel dungeon.
You controlled the character with two virtual pad, one to move one to aim your spells.

And that's about all I can remember.
Any help will be deeply appreciated, I really want to play the game again.