Diamond-Dust Dance - I feel like ninja with high perception should be able to see this technique, so incorporate that somehow. Otherwise, this seems fine to me.
Stagger Shot is fine.
Projectile Wild Dance is fine.
Mobile Core: Arena Trap - Increase the cooldown to five posts.
Critical Shot - This is under the C-Rank section, but it says A-Rank on the technique itself. If it's C-Rank, I'd like to see the firing rate increase from Fusillade mode lowered to 1.5x, and the speed and penetrative depth bonus from Arbalest mode lowered to 1.2x, but if it's A-Rank, it's fine as is.
Diamond-Dust Dance (B-Rank) - Clarify that the speed burst can only be used once per post. Also, change the cooldown from none to the same as the original Diamond-Dust Dance, as I'm assuming that once that technique ends, this one does as well.
Deathshot - Lower the defense of the crystal platform to 2 B-Rank jutsu or 1 A-Rank.
Strike Raid - The bolts shouldn't be imperceptible to those a rank lower than him or equal rank to him, because the jutsu rules state that
Scaling jutsu wrote:the illegal version of scaling is exemplified in techniques which state they vary in power or effectiveness with a user's stat or ninja rank
I suggest replacing that with a perception requirement to see the bolts, and those with Ace Eye and/or Focused will require less perception than everyone else to see them. Also, lower the sensory requirement to sense the bolts to A-Rank or above.
Abrasive Devastation - Lower the radius to 15 meters maximum.
Bullets Techniques - Lower the speed to a max of 45 m/s and range to a max of 80 m/s, although one has to be lower than the max unless a drawback is incorporated. Do this to all three types of ammo to conform to the updated jutsu rules. I'll try and think of ways to balance this, but at the moment, I think all three of these are insanely overpowered x)
Crystal Encampment Wall - Cooldown on this is too low, for a wall that can last until destroyed. Increase it to six posts.
Hiding-with-Camouflage - Change the words "their rank" to "A-Rank and lower" and increase the cooldown to twice the duration, and this should be fine.
Conversion - Lower the radii on this to conform to the jutsu rules, per rank. Since it has a +1 against water, it's only natural to have a weakness to some other element to balance that. Increase the cooldown for each rank by one or two. Also, clarify how long it takes to fully crystallize an item, and once it is crystallized, is it permanent and can you still disperse it?
Mind's Eye - I'd like some sort of cooldown on this.
Bump when you've made the edits.