Lv53 Wizard, Hell Act 1 - 30 hours played. Died to a pack of Frozen + Jailer + Horde spiders in the Spider Caverns. I completely underestimated their potential, as I was extremely well geared and nothing ever even came close to killing me. I later found out that I forgot to swap my -20% melee damage taken passive back in, since I was previously farming easier content and did not need it at the time.