Notes from my playthrough:
There doesn't seem to be much difference in damage when using a strong or neutral spell
When looking for the thief, it's not clear that you need to look at the houses unless you try to exit the village, and even then It's not clear which house needs to be investigated.
Newbie dev error: locking essential items behind gold paywalls. It's possible to soft lock yourself if you break your lock picks and/or forget how to properly pick locks.
Shady Larry sells two water orbs instead of having an Earth orb.
I don't understand why a "open/no" choice box when entering the castle is necessary.
Annie calls me a meanie even after I gave her a potion and told her the right directions.
Trees are spaces such that it's possible to move between them.
As noted by others, it really sucks that the orbs are only usable in battle.
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This is an OK RPG. I suspect many of the problem points are due to trying to make a full RPG in a short time, plus inexperience. I liked that you included custom enemy battler art despite the clash in art styles.