The Reckoning mode is attained when the player has the Fate Energy bar full. Reckoning mode makes the player significantly stronger by manipulating the threads of fate. While in Reckoning mode, the player deals additional damage and takes less damage from all sources.
To enter Reckoning mode, the player must hold the corresponding button (Default "X" on PC, "RT" and "LT" together on Xbox 360, "R1" and "L1" together on PS3) until it activates.
After activating Reckoning mode, the Fate Energy bar slowly drains until empty. While in Reckoning mode, the player may choose to Fateshift an enemy by pressing the "Interact" button when prompted while standing next to a defeated enemy. (Default "F", "A" or "X" on PC, Xbox 360, or PlayStation 3 respectively.) Fateshifting an enemy drains all remaining Fate Energy and returns the bar to empty, but deals a finishing move to the Fateshifted enemy, killing it and giving optional additional experience. In addition to the Fateshifted enemy, all other enemies defeated while in Reckoning mode will also be killed, providing additional experience as well.
If the player does not Fateshift an enemy before the bar runs out, all of the beaten enemies will stand back up - though with minimal health. This causes Reckoning mode to be essentially wasted as the enemies are still alive and possible additional experience will be missed.
Reckoning mode is recommended against particularly difficult mobs, bosses, or large groups of enemies. Using Reckoning mode against weak mobs or small groups of weak mobs is generally considered a waste.
Reckoning mode is occasionally automatically activated when certain storyline scenes occur.