While clearly lacking polish, this wasn't such a bad little game.
The biggest issues I found are the lack of sound, as you already know since you apologized for it on the main menu, and the clunky UI.
The UI especially was more noticeable as I didn't understand how to close out of it at first. I read the "X and P for back" control, but didn't understand that it referred to being used in the menus. It also didn't help that the first combat encounter spawned right on top of the first conversation screen, so I wasn't sure what was happening at first. And later I found I was unable to open the inventory again outside of combat.
Speaking of the combat, for the most part works fine. Though I was confused at first and thought I encountered a bug until I discovered I had to press Spacebar to get through each step of combat. After that, it was pretty much smooth sailing until I ran into Cthulhu and he flattened me out. Which is fine because I assume I saw almost all of the game. I vastly prefer short and sweet jam games to those that drag on too long.
I also found the tiles to be a bit too small, like I think the distance between steps should be twice as large.
This is a great foundation for a dungeon crawler, I think you should really look into getting sound effects working for various things. Like menu button clicks, attacks, enemy pain/death sounds, item use, etc. Aside from that though this was a nice little jaunt, good work!