It looks pretty cool. I couldn’t listen because my speakers are shot, but I like the looks of it. It gives me a kind of old-school tile-based roguelike vibe. I really like how you’re doing the fog-of-war there. Hope you keep going with this, I’d like to see how it ends up.
The demo looks good and sounds like an idea with great potential.
It just seems a bit too ambitious for a one man job, but if you have no time constraint, then why not try it.
I suggest you do a rough version of each game mechanic to make sure they all work together as you imagine they would, before you invest too much time perfecting any one aspect of the game.
Best wishes.