For some reason the Coilspine Shredder wasn't hurting the Matriarch when it was stunned.
I figured I would show this, since it seems very wrong to me that the Matriarch took no damage from the Shredder while it was stunned.
Could be a bug on PC, I don't know. The Strixera Matriarch is so rare, I'm not sure how often anyone would run into this combo.
Update: I played again on PS5 - I grabbed a Coilspine Shredder, and ran through Biome 4. I encountered two Strixera Matriarchs. Both times, I used the Coilspine Shredder to stun it, and while stunned, I charged up and fired again, and popped it. So it looks to me like the PC version has a bug.
Played on a i7-8700, 16GB 2666 RAM, RTX 3080 10GB LHR, XBox controller
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