For those having another shot, or not yet reached the 2nd level, at the Dwarven Hall mines, I found a little amusement.
This COULD be classed a spoiler, so, go no further, if you wish to do it yourself...
When you get to the sentry, give him the wrong password, and instead of just battering it, use the 'frog polymorph' - THEN batter it!- the result is an amusing series of convulsions, as he tries to change - even gives you time to crack a can! lol