Feat: Crashing Slam
You can dash your foe to the ground with a single blow. If the Strike you make with Slam Down hits, you can automatically get a critical success on your Trip instead of rolling a check. (Both the Strike and Trip still count toward your multiple attack penalty).
If you used a two-handed melee weapon for the Strike, you can use the weapon's damage die size instead of the regular die size for the damage from a critical Trip.