Darkwatch

Complete the following tasks to unlock the corresponding bonus content for that level:

Allies and Bosses Art: Curse Of The West under the Shootist difficulty.
Attract Mode Movie: Dead Light Prism with at least 80 kills.
Cowboy Animatic: Torture Maze with at least 30 melee kills.
Darkwatch Archives: All Gunslinger levels on Deadeye.
Enemies 1: Boneyard with at least 65% accuracy.
Enemies 2: Showdown with at least 20 melee kills.
Environments 1: Darkwatch Outpost with no deaths.
Environments 2: Invasion under the Deadeye difficulty.
Environments 3: Curse Of The West in 10 minutes or less.
Evolution of Jericho: Single player campaign under any difficulty.
Highmoon Trailer: Rescue in 15 minutes or less.
Rescue Intro Movie: Hangtown with at least 20 headshots.
Showdown Animatic: The Right Train under the Shootist difficulty.
Vehicles: Deadfall with at least 20 headshots.
Weapons: Morning After with at least 70% accuracy.
Wrong Train Animatic: The Wrong Train with at least 65% accuracy.

Click the Right Analog-stick to activate your blood vision.

Be careful while fighting banshees. If you cut off their arms and they still live, they will fire non-stop energy balls at you.

While fighting Lazaurus for the final time, hide in the house when he is using his twister move; it will shield you. Also, when he shoots his fireballs and smoke clouds, shoot them; they will blow up and you will be unharmed.

Blood Frenzy: Adds a supernatural boost to hand-to-hand combat.

Black Shroud: Covers you in a black shroud of darkness that hurts enemies when they attack for a short time.

Immortal Friends: No matter how many times you shoot Cassidy or Tala, they will not die.

Soul Stealer: Sucks the souls right out of living enemies (can be used at a distance).

Turn: Turns some enemies against each other for a short period of time.