Effective ways to shred damage resistance / energy resistance / spell resistance?

[Reduxist]

The investigator’s anathema talents and the esoteric advantage feat can get rid of up to 12 of any sort of resistance, among other things. Is there any other ability that can help assist in removing resistances, outside of blaster stuff?

[Shiroi]

Penetrating and piercing spell, spell mastery, if I recall. It's been a while. There's a few feats that help overcome SR, and some metamagics. If you go 3pp and fringe case, the Kineticist has a few (Legendary Kineticist or Kineticists of Porphyria, I can't recall which) abilities which are made to help mono element overcome immune or resistant targets.

[avr]

There's some spells. Splinter spell resistance, sure casting, diminish resistance.

[Scott Wilhelm]

I like working in a Grappling feature into many of my characters. You don't need to inflict any damage if you have them hogtied!

[Scott Wilhelm]

I like the Spell Weapon Against Evil for bypassing DR. Level 1 Cleric Spell.

[Scott Wilhelm]

Users of Ranged Weapons have it easy. There are the Weapon Blanches that can bypass DR for Adamantine, Silver, and Cold Iron. And of course, you can just have your arrows/bolts/bullets just made of Silver, Cold Iron, or Adamantine. You can get Ammunition or Thrown Weapons that do Piercing, Slashing, or Bludgeoning Damage.

I had a PFS GM accuse me of metagaming when I switched to Cold Iron Arrows when I realized I was fighting a fey creature.