Harpoon Launcher

Originally invented by Crobat One-and-a-Halfwit, the harpoon launcher's crude appearance belies its potency in the hands of an Ogre Hunter.

Based upon the heavy crossbows used by the lesser races but far too large and tough for a puny human to use, the launcher is capable of firing a barbed bolt as thick as a man's arm, to which coils of rope are attached. Ogre Hunters use these weapons to harpoon their cave-beast prey, digging their heels in and dragging the creature to the ground in a titanic tug-of-war before smashing their prey's cranium with a blow from their trusty club.

Source

 * Warhammer Armies: Ogre Kingdoms (6th Edition).
 * pg. 27