Character goes immune

[deathgrasp]

My level 10 archer just went immune to damage, after dieing. He is completely immortal, and it seems like the damage it reflected (might be from items, not really sure) back to the enemies.

On another note, does adventurer groups expected to become more powerful with time? My level 26 berserker got hit for over 500 damage in a single turn by 2 of them (not entirely a bug report, but feels like it).