The Warlord perk in Call of Duty: Black Ops for the PS3, Xbox 360, Wii, and PC is a popular second perk because it allows you to equip two attachments to your primary weapon, with the exception of underbarrels. This can be very helpful with certain setups, allowing you to add a grip to your SMG for better accuracy, and a Red Dot Site for easier aiming.
The Warlord Pro perk upgrade gives you the added benefit of starting a match with one extra lethal and tactical grenade, with the exception of the Willy Pete tactical grenade (the smoke bomb).
Don’t forget that you need to purchase the Warlord Pro perk upgrade after it’s unlocked for 3,000 COD points.
Here is the list of challenges for the Warlor Pro perk, and some tips to help you complete them:
Grenade Kills — Get 10 Frag or Semtex kills
Not overly hard, just keep using your grenades to get some kills and it won’t take you long. I would suggest using the Scavenger perk to help speed up the process.
Grenade Multi-kills — Get 1 multi-kill with Frag or Semtex
A multi-kill in Black Ops only requires two kills at once, so this isn’t overly hard. I like to do this one in Domination, when the other team tries to rush and take the B Domination flag. Works very well on smaller maps like Nuketown. Also fairly easy on Summit, when people like to camp the upstairs server area. Cracked is another good one since both teams will be rushing B and the hill keeps you from seeing the other team. Chuck a grenade just over the hill and you just might be surprised.
Two Attachment Kills — Get 150 kills using a gun with two attachments
Self explanatory. Put two attachments on your gun and start mowing people down.