While the game was a massive hit on Xbox 360 and PlayStation 3, the PC port was built strictly with keyboard and mouse in mind. Plug in a modern Xbox or PlayStation controller today, and you will likely find that the game either ignores your inputs entirely or maps them incorrectly.
To make the game feel like a traditional console shooter, map your controller to these exact PC keys: Controller Button PC Keyboard / Mouse Input In-Game Action W / A / S / D Right Stick Mouse Movement Aiming / Looking Right Trigger (RT) Left Mouse Click Fire Weapon Left Trigger (LT) Right Mouse Click Aim Down Sights (ADS) A Button B Button X Button Y Button 1 / 2 (Scroll) Switch Weapon Left Bumper (LB) Spot Enemy / Commo Rose Right Bumper (RB) Melee Attack Fixing Common In-Game Glues and Bugs battlefield bad company 2 pc controller support
