The collapse was ugly. A giant body didn't "fall" neatly; it crashed, and that crash became a hazard for everyone behind. Red orcs tripped over dying comrades. Knees slammed into rock.
Ankles twisted in mud. Momentum turned into injury. Goblins didn't need to kill them; they only needed to ruin their stride.
The goblin's darts were pretty effective in rendering heaps of flesh useless. Especially with the fact that some of the orcs fell so suddenly and made more who were running behind them trip on their corpses.
A giant orc tripping wasn't solved with a simple roll and dust off; that much meat moving and suddenly being forced to stop can break bones and twist flesh.
Ludwig saw it happen in real time, one red orc pitching forward, shoulder first, and not getting back up properly. The way his arm bent wrong told Ludwig enough. Even if the poison didn't finish him, the fall had.
War didn't always need blades. Gravity was generous.
