Just play the game. It is unlocked at a very low level in multiplayer. It shouldn't take long to unlock it. Maybe 1-3 games.
The Walther P99 handgun is unlocked at Level 10 in the Multiplayer mode of Call of Duty: Modern Warfare 3. In Survival mode, it is unlocked at Level 42 and costs $250.
you unlock it by doing multiplayer it just matters how much kills, or falling, and random things you do
Modern warfare 3 is better
You unlock it by leveling up to Prestige Lvl. 3.
The intervention is not in modern warfare 3. Modern warfare 2 has the intervention.
Modern Warfare 3 is not in 3D.
Modern Warfare Mobilized(the DS port of Modern Warfare 1) & Modern Warfare 3.
Modern Warfare 3.
Call of Duty 4: Modern Warfare came out first. This is the first game in the Modern Warfare series, and Modern Warfare 3 is the third game in the Modern Warfare series.
There is no demo for Call of Duty: Modern Warfare 3.
There are no demos for Call of Duty: Modern Warfare 3.
Modern Warfare 3 IS World War 3.
I believe modern warfare 3.