Melee attacks mark the target for death for a short duration.
Marked targets take additional damage from all sources.
Also, it's not an easy thing to live with.
Marked targets: +80% damage from all sources
Mark Duration: 8 seconds
Scoring a Critical Hit with a Sniper Rifle increases your Damage and Critical Hit Damage with Sniper Rifles.
This effect can stack up to 999 times.
Stacks slowly decay if you haven't scored a critical hit in a while.
Killing an enemy increases your Movement Speed, Melee Damage, and Gun Damage for a few seconds.
While Decepti0n is active you gain increased Gun Damage and Movement Speed, as well as regenerate health.