Horizon Forbidden West: Best way to handle Apex Slaughterspines in the Burning Shores DLC?

I'm really struggling with Apex Slaughterspines in the Burning Shores DLC for Horizon Forbidden West. They hit like trucks and are incredibly tanky. What weapon loadouts, valor surges, or specific tactics have you found most effective to take these things down quickly and efficiently? I keep getting wiped out and need some fresh strategies!