Vac Chaos X_x Problem 2.15 MW2

In-game hotkeys:
F1 - Toggle draw fps and current host
F2 - Open developer console
F3 - -kill exploit tool - Join a game, make sure the other team has at least one spot left,
Press hotkey, click on the enemy team, choose class, kill the green guys.
Because this exploit requires at least one spot, it is recommended to do it
at the beginning of a game when people are still joining.

For "spec-nading", go into any game, go near teammate with claymore/grenade,
place claymore/grenade near teammate, press hotkey, Spectator. Watch it blow them up.
Press the hotkey again and " assign" to re-join your team.
F4 - Host a public ranked match with custom settings - Go to "Find Game", choose your favorite game type,
and then hit the hotkey. Customize the settings however
you'd like, and then hit F5 to  the game when ready.

Note: MAKE SURE that you hit hotkey BEFORE the game joins a lobby.
F5 - (lobby) Start the game (when using F4 to force-host)
F5 - (in-game) Toggle infinite ammo