Glad I'm not the only one that has died to the trees.
Got my witch doctor to 39 a2 NM.
Barb died A1 NM to a tree, and a pack of other things.
You are not alone, altough I died in normal on my first level 11. Was spaced out looking out the window when I hear my friend yelling in Skype So I did whatever anyone would do! Start a new character, played it back to our current level (11) only to realize I forgot to mark hardcore.