Pretty interestin' stuff you got here, everything on display works as intended for the most part. I honestly dig the style, although I would go even further and have some of the menus, dialogue, and even backgrounds done within the style of the art displayed, but that might be a bit too far for the amount of time put in. Also the story was fairly unique, thus making it engaging and kept me playin' to see more.
One minor 'bug', if you can even call it that, that I ran into was that on most places you have triggers for dialogue to occur, you can trigger them indefinitely if you keep going back over them. Nothing major and doesn't affect anything whatsoever, but it's very noticeable if the player decides to backtrack a bit.
Also, just a bit of a suggestion for going forward, having a second drawing for the OPENED state of the 'container/chest' objects would work wonders in knowing the area a bit more when traversing through these mazes. It's fine as is, but it is pretty tedious to go up to a 'chest' icon to find out that I've already opened it, whereas if at a glance from further away I could already tell I've been there would save a lot of unnecessary backtracking.
In summary, what you've got so far is uniquely intriguing on a base level that with a bit more time in the oven it could be something even more so down the line. Great job!