When on defense, pick the Free Fire blitz from within the 4-3 package. Move your two interior lineman away from the ball one click each, move the lineback on the left down, and move the middle linebacker a little bit to the right and a little down. When the offense snaps the ball, the left tackle will go to block the linebacker on the left, the left guard will block the defensive end on the left, and the center will block the middle linebacker. This will give the interior lineman on the left side a huge hole and have a free path to the quarterback, which is a tactic that the offensive AI will hardly ever account for and can easily lead to several hundred sacks throughout the course of a season.