4.2.2
While making the Mob(Enemy) it says to give the player a second collision
If you are refering to this quote
As in the Player scene, add a CapsuleShape2D for the collision. To align the shape with the image, you’ll need to set the Rotation property to 90 (under “Transform” in the Inspector).
They only mean that setting up the enemy’s collision is similar to setting up the player’s collision.