How to Get the Weed Leaf Emblem in MW2

Select "Multiplayer" from the list of game modes. Choose any multiplayer game mode that permits more than 10 kills before the match ends. "Ground War," "Domination" and "Team Deathmatch" provide the most opportunities to complete this challenge.

Pick your preferred multiplayer class. Stealth classes work well when you're hunting a particular player. Create a stealth class by choosing a silenced weapon and the "Cold-Blooded" and "Ninja" perks. Use pro versions if you've unlocked them.

Play the game until you notice someone using killstreak rewards. Use their active in-game killstreak reward as an indicator of how many kills they have. Players earn Harriers and Attack Helicopters at seven straight kills, Emergency Airdrops at eight straight kills and Pave Lows and Stealth Bombers at nine straight kills. Begin looking for your target when he has earned approximately seven straight kills.

Look for your target everywhere on the map. Check remote outdoor areas in case they are hiding away from the action. Be careful when you're entering buildings, since players also fortify indoor locations with claymore mines and shotguns.

Stop your target when he is one kill from getting the killstreak reward. Kill your target at exactly 10 straight kills if he equipped the Chopper Gunner or AC-130 killstreak, at exactly 14 straight kills if the EMP is equipped or exactly 24 kills if he equipped the Tactical Nuke killstreak.

Continue playing the game until the match ends. You should receive credit for "The Denier" challenge and the weed leaf emblem upon completing the match.