When fighting those sword-wielding Olympian skeletons, kill some so that there about ten left and position Kratos with his back to to a wall. Equip the Claws of Hades (which need to be at level 2 or higher). Repeatedly lash out with the Soul Rip (L1 + CIRCLE) and you'll get hundreds, even over a thousand hits on just a few enemies. The Soul Rip attack deals very little damage. On hard modes you can probably increase the hit count further and be rewarded with more red orbs. Note: If you don't back against a wall you'll have to move towards enemies a bit after each attack.