Nice concept. It really could use some sounds.Path finding movement could use some work - sometimes when you click character returns to previous cell and then goes to it. Sometimes it refuses to move to desired cell even if it's second one in front of you.
Although you eventually learn what is item and what is not it would be good idea to highlight these items somehow. Put a glow, a stroke or whatever just to make them distinguishable from the background. It would be also nice to have walls and other obstacles to be visually different from the floor. Making these things less lighter could do the trick.
The fog of war makes things interesting and extends the feeling of exploration. Game has potential but it needs a lot of work to be done. Keep up the good work and on't give up on it.