I think there are some good ideas here but the execution is flawed.
Here's my take:
+The idea of the protagonist being thrown into an environment without a lot of context and leaving it up to the player to figure out exactly what is going on is compelling
+The Game Boy UI is neat
+The audio in the dungeon is somewhat effective gives a sense of unease
+The overall gameplay is fun
-The controls are a little rough at first on the PC
-The mobile mode on my phone (iPhone 13 Mini) is cumbersome to use, even with FireFox (specifically, I cannot attack and move at the same time and the game itself is rather small)
-The music and audio overall is too loud
-There are no sound FX cues for things like player attacks, monster attacks, damage (either to monsters or the player), picking up items, flipping levers, etc.
-The Game Boy UI takes up too much space and it makes it hard to see the game without going to full screen. (I suggest making the Game Boy UI a toggleable option for PC and mobile and, specifically for mobile mode, making the buttons outlined and transparent below the screen)
-It's not always clear what items can be picked up or not
-I'm not entirely sure about this but there may be a bug with the level design where the lever with the spikes next to it, once you flip it, closes the door so that when you die and respawn at the beginning you can no longer access that area because the only door in is blocked.
I think once the issues are tweaked this game would be really cool to come back to. :)