Why not doing it for real, without cheating... and by yourself !
Play Ground War, get Harrier Airstrike, Chopper Gunner, and Nuke.
Class:
Weapon: MP5K + Silencer
Secondary: Magnum + Tactical Knife.
- Perk 1: Scavenger Pro.
- Perk 2: Stopping Power Pro.
- Perk 3: Commando Pro.
Equipment:
- Claymore (Hint: The best equipment with Scavenger). In domination games, use C4 and plant it at the Flag site. (I killed 8 players once this way).
- Stun Grenade. (Maximum effectiveness for close combats)
- Also use Martyrdom. You might get a kill with it !
All what you have to do, is getting 6 kills only... then,
Find a place to hide, then use the harrier air-strike once a friendly UAV is on. U can get 2-3 kills with it. Plus, the hovering harrier will get you some kills.
This will get you 10 Kills to call a Chopper Gunner. Here, Unleash the power of the chopper gunner and get the rest of the kills. You can easily reach 25 kills this way.
With this class, i was able to get more than 40 Tactical Nuke. No cheating.
Cheers...