I've never actually played any of the old classic text based roguelikes, so I was curious to check this out. The wall of exposition text at the beginning was a little intimidating at first, but the game itself was fairly simple and easy to follow. Managed to finish the demo on my first run. With the current narrative setup, it's definitely a good starting point for something bigger and more fleshed out. Looking forward to see what you can do with it in the future.
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Hard to say, because as I said I'm not really familiar with the genre and what the traditions and expectations are for these sorts of games. I mostly play narrative focused games, so little story beats or description texts during the gameplay or for boss encounters would probably pull me personally more into the world. Currently the long texts at the start and end feel slighty contrasting with no story during the exploration and fights, maybe spread it out a bit more.
Also, once there's more stuff in the game, then some more player agency and choices on how you approach or solve different quest goals. Visually maybe more colors to differenciate between different enemies, environments etc?
But I'd say that for smaller hobby projects, the best advice is always to add features and elements that you want to add and enjoy in similar games yourself.