CrossFit Games Open 16.1 Workout

Complete as many rounds as possible in 20 mins of:
Overhead Walking Lunge, 95/65 lbs, 25 ft
8 Bar Facing Burpees
Overhead Walking Lunge, 95/65 lbs, 25 ft
8 Chest-to-bar Pull-ups

43/30 kg
25 ft (7.5 m)
https://games-assets.crossfit.com/s3fs-public/CFGOpen2016_EventPDF_16_1_sjdnheyw652bgdsnk.pdf