Lucas hopped off the Death Stalker as it tried to stab him with it's stinger, spinning around and slicing the stinger off with his katana, before peppering it with ice bullets from his pistol.  He noticed it about to grab Bizz with it's claw, and warped in front of her, grabbing her, and running towards the bridge near the cliff, as the Death Stalker chased them, his stinger sticking out of it's head.