Thank you for playing, and appreciate the feedback!
Will definitely note your fireball idea as it seems something I find will fit the game too.
Yes as I said I have done the rpg manually from all of my cumulated knowledge.
As for the assets, they are all free stuff we find commonly since we didn't want to create them from scratch when they are already available (mostly from quaternius, the asset store, open game art etc.)
On the audio side most of them were created manually by the sound artist in our team.
It would a long list to say what is ours or not. I mostly took the best sounds to me, wether it's ours or free assets, and put them together where I thought would fit.