Ok so i been messing with giants ever since i seen them do i hit kills throwing fireballs or trying to freeze them always i feel like its the "messing with sasquatch" commercials from jerky commercials. I keep telling my self one day i would kill them finally i did. @ lvl 15 and never got touched by them all it took was about 15 duel cast of Frost Atronach. When i killed this fearsome giant and could not wait for treasure i was sadded. All i got was Steel war axe Value 55 leather bracers value 25 giant toe value 20 ( i keeped that as my trophy from the kill) Horker tusk and 115 gold.
So far that has been the hardest kill in the game ... who needs dragons with fighting with giants is a one hit kill its fun to mess with them we all do.