I just managed to succed on my second solo try (EK lvl 700, 122 sword base). There are a few things to consider:
1- You must either be an EK or have one in your party; having them run around would make it impossible.
2- Overpower charm with 11% chance is a must. It ignores resistances and deal 120 damage each time it triggers as its dealt as neutral damage.
3- Even though the wiki states that it takes 10% damage from physical attacks, fire seems to be more effective. I tried the ones by Telas comparing falcon longsword with sanguine blade.
4- As you can expect, DPS is a must, I used all the tricks up my sleeve to achieve 201 sword fighting, along with exori min expanded shape.
It took me almost all the allowed time (~8 min), the first time I wasnt prepared so it kicked me out with the last mob on yellow. I wanted to try attack prey but it wont let you select it, probably because it yelds no xp.
I hope this helps.