For Time:

40 wall balls (14-pounds)
40 medicine-ball step-ups (20-pounds)
Rest 2 minutes
30 wall balls
30 medicine-ball step-ups
Rest 2 minutes
20 wall balls
20 medicine-ball step-ups
Score is total time including rest. 

17:24

I wanted to push myself to go unbroken on the wallballs -- broke after 30 on the first round and 21 on the second. It was more shoulder fatigue than my legs wanting to quit. No matter what implement you use (dumbbells, sandbag or medicine balls) the weighted step-ups are a grind - ESPECIALLY when done after wall balls.