I think the game needs a bit of work, as stated by others, the mana is such a slow recharge, sometimes ult doesn't work, and not being able to jump is a limitation bc then you're waiting to recharge but there's nothing you can do but get hit,
I don't see an advantage/disadvantage to going dark/light as it doesn't change the gameplay in any way and I think it's lacking on the theme.
The music and SFX are nice but they should be on by default otherwise people like me wouldn't realize there were any unless we read the comments 😂
all in all, it was a nice game, I think if you fix the specified things and add some polish to the game or use more unique art it could be really good.
Nice job!