Compressed Air Tank is so much fun to use. BTW, as you were using it, did you notice whether the
(tagging in case anyone wants to be surprised) moved as you moved the reticle or right joy stick? I thought that might have been the case but I'm not positive.
One maybe-not-so-surprisingly-great synergy I found in my last run was scattershot + Magic Lamp. With a large boss like Dragun where each every bullet will connect, each shot was spawning a genie that did a bunch of damage.
Also, I've come to appreciate the Pilot more and more as the best character in the game. Yeah, the Rogue Special is garbage, but slightly cheaper shop prices and room for a 2nd active item are invaluable once you get beyond the 2nd floor.