I broke my nose on a sneaky trolls knee just before dying once. I was in the middle of the Elder boss fight. He cast the roots thing and I turned to run to the next pillar and ran smack into a trolls knee with my nose. A whack from a couple of roots, one from the troll and before I could drink that lovely health potion vines from the Elder. I have no idea how the troll snuck up on me let alone where he came from. I guess my clearance of the area just missed the big blue baddie.