How do you unlock everything in modern warfare 2?

Answer 1

Legally, by completing the game's challenges and unlocking all weaponry, titles and emblems. There are illegal ways of doing this to, such as hacking, or modding to make it easier to play. If you want to feel like you have achieved something, do it the legal way, like me.

Answer 2

if its the map packs you need microsoft points if your talking about career you cant get those maps

Answer 3

The doors at target open automatically...