One thing that would make the game a bit better would be to have a key to see where you have been on the map.
Look at Descent 1, 2, and 3... the map feature at worked very very well in Descent.
The H key to show the path to take helps but in some levels it gets very confusing.
Such as "Storage"... I kept getting lead on a wild goose chase at times... I would go where the Path Indicator pointed... then it pointed me back to the same spot I had just come from after I went in the direction that the Path Indicator sent me to.
Other than that, this game is wonderful... I really like the fact that the percentage of items on each level where I have finished shows the details.