Wiley out here farming necro posts.  

The dude was asking about building Gnut to climb Hard FK.  Just being my helpful self.

And I always appreciate it.

i went the attaack after FK attacks method.  im 6/20 wins away from completing the mission and i basically put 

Arbiters gear on Mikage, Kymars on Neldor, Lamasu on Criodan and Lyssandra on Yakarl.

Valkyrie is the slowest i think at 270 speed. everyone else over 300 with mikage the fastest at 365. All speed include the FK dungeon speed bonus

Basically once you get to the boss you counterattack up, take the hit then go after shield breaking it and making sure the FK never takes a turn. it takes a while since nobody has 100% crit rate but yakarl has helmsmasher and neldor has crit damage amulet but it still takes long lol . This method is safer since you have more wiggle room with the bosses tm starting lower than at the highest 

i

i

this method is the standard less consistent double ally attack freeze. this method can fail since you have such a small window to place freezes and you need to proc phantom touch at the beginning consistently so the shield breaks quicker and you lands more freezes. its very rng intensive and will only be more successsful the better souls you get for your neldor, criodan and yakarl. Relentles helps if you got it

Good Luck on the Marius Mission. If that is all you want, then 15+ minutes per run is fine, but if you want to farm FK H10, you'll probbaly want to double down on the double/triple Ally Attack Team. You may need to pile on the Speed & Accuracy. Of course, having at least one Gnut makes it easier & faster.  

GLHF!

Aint gotta be fast or pretty.  Just gotta get the job done.