Hey I'm making this forum thread to tell others that sometimes gear dosen't matter and that everything depends on skill.
Our gear
Me
Shockburst brandish 10
Blaster 7
Wolver set 10
Great honor shield 10
My friend
Cutter 8
Freezing vaporizer 9
Spiral plate set 6
Great honor shield
As you can see our gear is near to not appropriate to this mission but we learnt some things and killed JK (ps its only me and my friend)
1. Bomber+Gunner=EPIC WIN! My friend would plant freezing vaporizers everywhere and using the KB on my blaster I would shoot anything that isn't frozen into the cloud my friend left.
2. Sheild cancel FTW! The Giant lichen colony was an absolute pain! But my shockburst did easy work of that. After the colony does his spin or spike attack i would land 2 successful hits on him and my friend 5 since he has a cutter and then we would sheild.
3. Brandish charge is so powerful if used correctly! Whilst the jellies were frozen in my friends bomb I would charge the shockburst then inflict everyone with shock! Against the lumbers I wait for my friend to freeze them and after they take damage from thaw I hit them with my charge from behind and I end up killing them easily.
4. Teamwork! Best thing ever
I agree that skill trumps gear --- if it didn't, then this game wouldn't be very good. And your gear is obviously not the best possible for Royal Jelly Palace, and much of it is only 2-star. So you must be playing pretty well.
However, this gear is actually quite good for RJP. Your weapons are neutral against slimes and silkwings, and strong against constructs. Your armor is all normal+piercing, which is exactly what you want. RJP, being on Stratum 4, calls for 3-star equipment; although much of yours is only 2-star, the jump in quality from 2-star to 3-star is not huge.