Ulkanos Problem

in my opinion use ls and just keep dodgeing and fade slashing to his rear end and spam the spirit combo but like all monsters spam the hit and run when raging /yes/

Idk about longsword as element goes well with them), but shadow of the moon should be sufficient.

Juggernaut is possible undoubtedly, but I suggest getting the copper blangonga hammer (magnitude) and at least Reckless abandon+2, which cancels the -15% affinity as well as adding a meager 5%. 5% affinity with over 1600 attack is better than the juggernauts 1404 attack with 0%.

but my armor already has reckless abandon +2 so all my weapons are affinity powered

In that case shadow of the moon would be amazing if your issue is dying.

Still say magnitude for hammers, if your issue is defeating it fast enough. Hammers destroy akantor and ukanlos easily. If you don't feel like fighting copper blangonga (I wouldn't think badly if you didn't haha), juggernaut is #3 in the top 3 best hammers, chaotic order being #2/1 depending on affinity and magnitude being #1 but only with affinity.

Chaotic order is still a pain to make, but less so than magnitude IMO.

If all else fails, watch an akantor/ukanlos hammer guide video. only real differences between the two are weakness, health, and a couple attacks (ukanlos has 3 new attacks compared to akantor i believe... everything else is exactly the same.)

If you still can;t beat him... perhaps go back and beat every other quest in the game. At that point you shouldn't have any issues fighting him XD. he may be the endgame monster, but in no way is he the hardest.

Make and upgrade the Gunhammer line....at it's max upgrade it's ridiculously good and with it's Fire element also, it wrecks the hell out of Ukanlos.

Learn how to dodge his swim first. Once you learn how to do that he simply becomes an ice akantor and assuming you solo'd to ukanlos you'd have the general idea of what to do afterwards.