Edit: Sorry - should be 'heel' instead of 'heal'
My PCs have tangled with Alduin as part of the main quest several time. They were only victorious about half the time and those were dear victories that were won at high level with powerful weapons. I'd asked the forums how quickly players have finished the main quest (without mods or console commands) and there were many who said they did it as early as level 10. So what gives?
What gives? Do all dragons have a similar weakness? I tried this approach with a different dragon and it wasn't really any different from other destruction spells. How did you quickly and easily defeat Alduin and can you use the same strategy against other dragons?