Morphology: Dark Grenchler
Darkling-possessed amphibious predator.

Symbiosis brings additional power to creature, but it retains its key weakness. Target the back shell to reveal a weak spot. Darklings are drawn to possess vicious predators, making the Grenchler a prime candidate. Despite the added toughness gained from possession, the Dark Grenchler retains its one weakness. Remove the back shell with explosive blasts to expose its pain center, then attack the pain center to quickly dispatch the creature.