filthy 50 in reverse order Workout

For time:
50 Double unders
50 Burpees
50 Wall ball shots, 20 pound ball (I used 18 lb ball but threw much higher)
50 Back extensions (I did hands touching floor with stiff legs)
50 Push press, 45 pounds
50 Knees to elbows (I used rings)
Walking Lunge, 50 steps
50 Kettlebell swings, 1 pood (25 lbs DB)
50 Jumping pull-ups
50 Box jump, 24 inch box

I thought this would be a lot faster & easier, but I thought it was a bit harder since you are PREfatiguing rather than taxing in the end, so you also can't really just push too hard in those harder burppee & wall ball since they are in the begining.
GREAT TOUGH WOD