Lightweight

Lightweight is a perk that featured in many CoD games and it's mods. Lightweight perk allows player to move faster than normal.

Lightweight Pro
Now, your player will not take damage from falls, but he can still die if they fall off the level. To get Lightweight Pro:
 * Get 20 kills with knife in one match while sprinting.
 * Get 100 kills with knife while sprinting.
 * Escape death 10 times.
 * Fall from heights without killing yourself 5 times.

Lightweight Elite

 * Get 30 kills with knife in one match while sprinting.
 * Get 150 more knife kills while sprinting.
 * Escape death 20 times.
 * Get to the quick prone position 10 times.

Lightweight Contract Reward
After completing the contract, you will get the Adrenaline Rush perk. You must:
 * Get 50 knife kills while sprinting in one match.
 * Get 25 kills with grenades.
 * Get 100 kills with Lightweight equipping Running Back.

Curiosities

 * Black Knights' Lightweight character model head resembles WWE Superstar CM Punk.