Avp 2004 30

In the Labyrinth the tittering obscenity and the reptilian humanoid slammed together with a shuddering impact that sent both creatures reeling. Howls and thrashes accompanied their charge. The Predator lashed out, striking a backhanded blow
against the Alien's gnashing jaw. The Alien staggered. Then, in a scorpionlike motion, the black monster attacked with a flash of its spiked tail. Springing back, the Predator used its wrist blades to counter the strike and in a quick twist, it severed the Alien's tail.

Yowling, the Alien whirled, spraying deadly venom from its bloody stump. Whatever the steaming droplets touched burned, sizzled and pitted. The Predator pulled back its arm to thrust again but discovered that its wrist blades had been reduced to smoldering, molten stubs by the Alien's acidic blood. Snarling, the Predator leaped at the Alien and brought it down. As they grappled, sparks-struck from solid stone or from the Predator's shredded armor-created distorted shadows that writhed on the walls, floor and ceiling.-Chpt.24 pg.198