This is a game which appears to have great depth, yet refuses to explain any of it to the player. The controls are intuitive and pretty easy to figure out, but the strategy is not. The sword and shield icons seem self explanatory, but what about that explosion symbol? Is that supposed to be magic? And what about that target symbol, is that accuracy or range?
The health system is bizarre. There appears to be multiple health bars on characters, and they can deal damage in hearts and skulls. Why do my weak characters take four skulls of damage from an attack, but my strong characters take twenty skulls...from the same exact attack by the same exact enemy? Everything feels arbitrary, like the game just decides whether it feels like winning or losing that round.
I can tell you've put a ton of love and effort into this, so I'll tell you what: let me know when you have the core mechanics explained (either as a tutorial in game or as a description in the game's webpage), and I'll come back and give it another play. I just don't feel like I can give good feedback for a game that's currently so cryptic and explains nothing to the player.
Side note: I love the pixel art for the backgrounds! The world feels so crisp and vibrant. Reminds me of the best RPGs from the SNES era.