you have to prestige, you get new challenges and then you get 500 or 250 knife kills
Call in 3 AC130's.
Stab 50 enemies for Blade veteran (silver title) Stab 250 enemies for Blademaster (gold title)
get 50 knife kills
do some challenges they will unlock it for you ------------------------- Completing every challenge will unlock every title.
unlock all the attachments or get 500 or more kills with it when you have prestiged
Stab 250 enemies with your knife. You must have prestiged at least once to unlock this challenge.
kill an enemy by starting a chain of explosives. (or enemies)
kill 250 people with melee (knife, tactical knife)
You have to achieve the Mastery challenge for that weapon. That is, unlocking all attachments.
Well, as you all know the 'Ta-Da!' title is VERY rare. I know how to unlock it! What you have to do is you have to kill 25 players within 5 seconds after respawning on a Tactical Insertion. That's how you unlock the 'Ta-Da!' title!
you unlock it by getting 50 kills with the stealth bomber. this is the Spirit 1 challenge.
get 50 kills with a stealth bomber, however you must have prestiged first
To unlock Stinger Veteran III, as well as the title (has gold skulls on it), you need to shoot down 2500 helicopters with it.