I guess it was fair enough - by the time I reached the Hall of Echoes, my level 37 DPS mage was so overpowered that all the supposed 'boss fights' were over in a matter of seconds.
I guess could have just notched up the difficulty, but there was a certain satisfaction in killing them with one fireball - it felt like a reward for my carefully planned intelligence/magic damage/destruction build. I might have to do a rebuild now the benefits aren't so clear. Thankfully I didn't wast any Malachite on level 10 damage enchantments - I settled for level 9.
