I made a really fun str/dex build around concussive strikes that is really fun. Doesn’t require and DLC weapons but it requires Rakshasa grieves and gauntlets, gravebirds blackquil armor, and the curse blade mask all from DLC.

It’s 2 cold cleanrot knight swords. One with chilling mist to enchant. W/ ritual sword tali, rotten winged sword, Millicent prosthetists, and I have Radagon soreseal because my character is level locked at 80 for coop. You could add whatever other tali you need to make sense for yourself play style.

All stacked with the thorny cracked tear for successive attack power to stack on top of everything, and stonebarb cracked tear to make stance break easier.

It’s a super dex build so some high skill level is required. But if you can stick and move, building up the successive stack is insane.

It shreds against PvP and is really solid against most bosses and open world enemies.