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Thanks for your replies. But you deal x damage per monster and could calculate whom you should attack...looking at all monsters of the other player and their health...
Of course there is an infinite number of thinks you could do, just like in any other game.
There really aren't that many monsters on the map at a time though and checking their health is easy due to the damage tokens.
It really depends on the players and how experienced they are. The game itself is pretty average regarding the number of decisions you have to make on your turn. Of course, if you have a player that already suffers from analysis paralysis then dungeon command, like any game, will take a while.
Also, you can start thinking about what you are going to do on your opponents turn.
EDIT: I agree which Roger regarding the cards adding enough randomness to make dice unnecessary.