I would be curious to see what the numbers on builds of people who were who managed to beat Radahn without using one of the cheese gimmicks like Rolling Sparks, especially where they attempted it without a cooperator. I bet the vast majority of them would involve Finger/BK Shield and <insert bleed spear here> counter poke, at least on one character. The Albrecht summon is a trap, btw. He does virtually no damage and cannot tank or hold agro worth a shit, but the fight scales way up if you summon him.