How to not blow chunks at multiplayer

1: play more.

2: learn the maps and find where the power weapons are.

3: Turn your sensitivity down so you can track the enemy more easily for headshots, as headshots = kills.

4: Play with friends, its much easier to work together when your with friends than with random people who will probably fumble around with a thumb up their ass.

If you have found this helpful, or you would like to give me some feedback, don't hesitate to comment!