Granted I understood right and you can't use the Steel Key to open the Gate, I think I found most of what the game has to offer (I tried to bump onto every wall but I still may have missed some hidden doors, leave alone buttons and such).
Overall I greatly enjoyed my time with the game.
I mapped the full town then found the map and explored all the caves using it.
You went with a big scope, variety of combat might be slightly limited but overall many aspects are polished. The caves are just different enough that they don't feel like bloat.
I love that you use instant movement, I'm a bit sad when I'm walking on a grid while not being able to walk as fast as I click.
However for the same reason I'm not sure about the use of cooldowns instead of turns, since you don't use real time otherwise (while Dungeon Master needs real time for plenty of puzzles and such).
Nonetheless presentation and exploration are top notch, easily on par with some commercial games, good job.