Suggested by Sonic Gilgamesh is known as one of the most powerful fighters in Fate. Assassin has solid stats in his own right but generally would not be considered as one of the top swordsmen in the verse. He has no real answer for Gilgamesh’s long range attacks and also won’t be able to get in close enough to score a counter of his own. Ultimately Gilgamesh’s fighting style is really a hard counter to anything that Assassin will be able to pull off. Gilgamesh wins.