It is impressive and nice looking, but I found myself getting confused and lost really quick (which I guess was part of the mechanic). I couldn't figure out what R and B meant in the first hall but eventually got to the hidden doors and could get to the wooded area.
I think a bit more of a tutorial or something would have made it a lot easier to play, but all in all I think I get what you were aiming for - as much as I prefer the smooth movement in some of the games this is the first game I have played in the jam that really did feel like one of the classic dungeon crawlers - good show for doing something classic!