This is what I did while going through JP a couple months ago…
Team - Leonidas /St. George /Support np2 orion/mash in back line if needed with lvl 10 first skill & the regular mystic code.
Taunt with Leonidas and George, all while getting orion’s np up. When gawain nps the first time, use orion’s evade. Heal with the mystic code if you’re in trouble, use the mystic code’s evade on gawain’s 2nd np, cuz if he nps 3 times, orion’s evade should be off its cool down.
Use the mystic code’s attack buff and orion’s attack buff when you use her np the first time. Should deal near 300k+ damage.
Honestly, all of Camelot can be beaten this way.
Gawain - orion setup
Tristen - saberlot/musashi set up
Saberlot - jalter setup
Oxy/Nitocris - aoe ruler (amakasa) or kiara setup
Mordred - Cu Alter/herc/Archuria setup
Lion King - Musashi or okita setup
I think those are it… but yeah. Level up mash and that first skill pronto, and your good. Leonidas and George don’t need to be leveled, but having George at 45 might by you 2 moves.