The core gameplay of the game works perfectly. It has all the necessary mechanics of a grid based dungeon crawler game with JRPG elements. I think only thing that is missing is an automap. The dungeons are labyrinthian and you can easily get lost. I hate it when i lose my sense of direction and start going in circles in these games. This is partly the reason why i couldn't play this game until the end.
In terms of visuality, everything is too low res. I know that you went for a 8-bit look and feeling but i played a lot of NES games on the emulator they didn't look like this. Top down view has the 8-bit look, you pretty nailed it there with the color pallette and everything, enemies looks nice too. But in FPS camera, everything is too muddy. You hardly can make out what is what. Wall sprites look too big and ugly. I think this happens due to the fact that the engine you use is a 2D engine and those sprites were made for a topdown game, when you zoom in on them, everything looks muddy. Also i think due to the same reason camera perspective is off. When you turn in the dungeon, the wall is directly in your face.
You managed to capture the 8-bit JRPG vibes with musics, they were nice.
I like your storytelling and the game has an interesting story. You wanted to reverse the typical JRPG stories and make the players play from the enemies perspective, that's a very cool idea.
These are my overall thoughts on your game with pros and cons. My final verdict is: It's a very complete game with a good amount of content for a 9 days game jam. However, the visual quality and gameplay loop didn't make me want to play the game to completion.