It's a real shame you couldn't finish this game, because those graphics are gorgeous!
The UI, environment and just general atmosphere were also quite good. Though I did have some confusion with exiting the first findings menu because I needed to hit Escape to clsoe the menu, but on browser that just exited fullscreen.
Oh, and I was unable to play the downloadable version because the virus scan kept failing on chrome.
I think the initial text at the beginning went on a bit too long, or there should have been some unique graphic for the cutscene basically. Because as nice as the shore scene looked, it got tedious clicking through so many lines in silence.
The combat isn't all that fleshed out as there's no abilities and the player can only defend or attack. And the balancing should probably get a second look if you finish this. Because I got trounced by slimes and could only do 1 or 2 damage at a time while they dealt 4-8 damage. If there are going to be brutal enemy encounters at the start I think more warning should be given, depending on how old school you want to be.
The combat did prevent me from exploring more though, which is sad because the world looks really nice and varied.
I liked the party characters, though I didn't expect Arthur to be that character lol.
I think this is a really good base to work from, and I hope you get to either finish this game or reuse the art in a future game.
Good work!