Change single player bot number:
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the “singleplayer” file in the “craveglobaloperationsglobalopsattributes” folder. The file contains the name of each character followed by a 0 (friendly) or 1 (enemy). Change the bot number as desired.

Play as terrorists:
In offline mode, successfully complete all thirteen Campaign 1 missions. Then, select the Next button on the mission select screen to get to Campaign 2, where you can play on the terrorist side.

More money:
Use the following trick to start off with $4,100. Note: You must configure the “End” command to the button that you wish to use it with. Become Heavy Gunner, go to the buy screen, but do not buy anything. Instead, click next onto the reinsert screen. Once you deploy, press the “End” key. You will now have $4,100 to spend on any specialty.

In single-player mode, press [F4] at the buy screen.