Cider - I did not know this. Plus analysis.

 Cider can pull with her vanilla arm skill?! I thought only the upgrade. 

https://steamcommunity.com/sharedfiles/filedetails/?id=3590526648

-Vortex Grip
NEW MOVE: Hold Skill to Grab and throw an enemy. You spin the enemy around before throwing them, which hits surrounding enemies as well. You can hold forward or back to decide in which direction to throw the enemy, too. You can't do it in the air though.
NOTE: this does NOT remove your ability to pull enemies towards you with your base Skill: if you tap Skill, release the button, and then hold it again, you'll be able to do your basic pull Skill with your grappling arm. The timing is a little tight, so it may take some practice to pull it off.

Agree it's got faults. This is the one that looks like Vega (Claw) from Street Fighter's off the wall attack (one of his attacks, Flying Barcelona something thingie). 

-Magnetic Jump
Wall Jump is possible. Press Strike to follow with a diving blade attack. This is Cider's stinker Inspiration... For how cool it is in concept, Wall Jumps are way too infrequent to implement easily in your gameplan. It's a shame, because it looks very cool, and the follow up attack is rad too! I'd advise against picking it up in a serious run, but hey, it's a lot of fun to mess with.

I loved using this one with both gadget Arcanas. I guess it was luck I got both, (didn't I get both?).

Recycle
Gadget-based Arcanas spawn Mana orbs when disappearing. This applies to Clockwork marionette, Spider mine, and Flying shredder, and allows you to spam these a lot, especially if you have Arcana Mastery. It unfortunately does nothing for the other three Arcanas.

I didn't know that! Free money!

-Cashback
When no Throwable is equipped, use gold to throw a damaging coin. The coin will disappear if it hits an enemy, but you'll be able to pick it back up if it lands on the ground. Keep in mind that your co-op partner can also pick up the coins you throw. This can be annoying, but you can also use that to give them extra gold if they need it to buy a Trinket. If you have Throwable Replicator, you'll throw three coins for the price of one...

Need to try:

-Gyro Drop
NEW MOVE: Up + Skill while Grabbing or in the air. Landing spot can be controlled. This is a versatile move that can help keep you safe during intense situations as you become invincible when you execute it and you can relocate to a safer spot on the screen, or slam your victim against a group of enemies to scatter them. It's a great way to finish your combo when you reach Overpressure as it deals a lot of damage, which gets boosted by the Overpressure hit. Plus, it just looks so cool.

This I loved combining with jump=gale:

-Pneumatic Heels - - Gain 2 additional Dashes and allows to Air Dash.

I did not know this... so apparently each char gets a super Arcana upgrade after quests:

Unlocked from Cider's personal quest:
-Arcana Mastery
Give brand new properties to your equipped Arcanas.
Kinetic gear hits six times instead of three.
Spider mine turns into three mines that track enemies automatically. (((note to self, so the doppelganger was not cheating afterall)))
Tinker blade fires five kunai instead of three. By the way, did you know you can aim them up and down when using the Arcana in the air?
Clockwork marionette Clashes enemy attacks instead of Deflecting them.
Flying shredder launches an additional drone that spins around the first one.
Rising drill hits and Clashes in a significantly bigger area of effect, lasts longer and hits more.