I've got two.
First was when I played IVANT and found Dagron as a random spawn (bug ^^) I had 3 life savings, so I was pretty comfident. By dual wielding Saal'Thul and Vermis I hitted him couple of times and then my Vermis teleports him away. Nice tactic I felt. Well, after 5-6 teleports I used stetoschope on him to see how much HP did he have. 68/2000! OMG! I quickly switched off my Vermis, so i wouldn't teleport him away. Got one hit on him and... Blam! Beheaded. Funny thing was that i had AoLS on, and 2 on inventory, but it didn't activate because i ended having no neck! *sigh*
Second one was so horrible that i almost deleted IVAN from my comp. I was damn lucky, and had these safely in my chest:
1 Scroll of Enchant Weapon
10 Scrolls of Enchant Armor
3 Scrolls of Harden Material
5 Scrolls of Charging
5 Scrolls of Taming
2 Scrolls of Repair
3 Wands of Mirroring
2 Wands of Cloning
I also had couple of strikings, lightnings, many healing liguids etc.
Then I wen't to GC5. I couldn't find stairs anywhere, and had hard time staying alive. Whoops, enner in front of me. Aaah crap all my wands are in box *looks for them* When I got them, enner was standing in front of me. Oh crap. I ended up being 1 or 2 shotted by scream. *gg*
But what can I say? IVAN is cruel.
Mammoth post o.O