Gave it a try and got very lost haha. The sound design is great and the visuals work very well!
Some way to at least keep track of landmarks would have helped I think. I also didn't really know what my objective was, or if there even is one beyond wandering around. The mouse monster still has a direction vector attached to it, I don't know if that was intentional. The intro, elaborate as it is, also feels very disconnected from the rest of the game. Especially for how long it is, it told me nothing about what I needed to do once in gameplay. On a side note, the cut to and away from the android receptionist was funny to me.
Regarding the gameplay, I think some balancing might help. I died twice due to unlucky card pulls, I feel like 5 in health is a bit too low. 10 may be too much but a 7 might have worked better maybe? The enemies also don't really seem to move from their spots, though I think I saw a crystal rat in a different position after a while.
All in all a good effort!