I liked the idea of the game also I liked the graphics it looks fresh. I was disappointed that there was no music. It also seemed to me that the balance is too high and that the crystal does not decrease hp
The crystal has intentionally VERY high health to make the game able to be played long enough to max out all of the upgrades. Once all upgrades are maxed, crystal damage will ramp up much faster due to the hidden "extra" upgrade.
Music..I had a hard time thinking about what I should do...same with sound in general. Clicker games are repetitive, so sound design is usually minimal or very very subdued. Given the nature of this game, I figured the best way to play it would be keeping it open in a browser window while doing something else...or listening to your own music! However, the soul ball generation and the curse meter timer will still keep you engaged vs a purely idle game.