It didn��t worked to me

After 50% health he might use the same move but cause an explosion so beware

If you can get behind him, but then he just uses a sword slash. Fk this dude

Half? After an R1, Critical, and charged R2 he was at about 75% for me

Get better stop coping

i was raging as well in this fight, but like all others, it can be done.
1.Always stay close. This swordsman really sucks in close range, ironically.
2. it is true that he starts another attack combo before you have time to heal. Elden ring plays like hollow knight in the healing departement. Check moves that leave him recovering for a long while, then heal in between those.
3. grab can feel *******, time that **** right, better to actually count the seconds.
4. In close range there are 2 moves to look out for, both that light his sword in red.
if he holds it vertically in his left= 1 swipe with a 3 sec delay.
if he holds it closer to his body in his right = 2 spin attacks and 1 slam to the ground attack.

stay close.
ironically enough. swordsman sucks at close range.

This boss is a giant **** you to anyone who isn't melee.