Are you playing with the keyboard and mouse instead of the gamepad? I really respect you! <3

If you reached a woman with a bunch of chickens. And you will need to knock the chickens out and drag them back into the shed with "RMB" key for unlock the "Don't interrupt me, please." achievement, but you don't know where is the RME key? No problem, bro/sis. I'm here for you.

FIRST STEP:
Take your weapon (mouse)
SECOND STEP:
Click that button. (sorry for my middle finger, It wasn't my purpose)

CONCLUSION:
Here is the RMB key revealed! In the end it was just the right button. :-D