Repeatedly and rapidly press the attack button and combo sequences to carve away an enemy’s health until a skull icon appears above the opponent’s head and another appears below your attack controls. This means you can execute a fatality. Press the corresponding skull on the bottom right corner of the screen.
This is typically a three-swipe combo that starts with two specific swipe direction arrows and ends with a choice of three directional arrows. When more than one command appears on the screen at once, just choose which direction you want to swipe—it does not change execution type. This ends with an execution animation and refills a portion of your health meter.
