Run 400M and then
3 Rounds NFT of:
20 Kettlebell Swings (face level)
10 Overhead Walking Lunges (using bumper plates)
5 Pull-Ups

3 rounds
20sec hollow body hold
30 sec. bar hang
10 vups

From 0:00-3:00, perform 3 rounds of:
3 pull-ups
6 push-ups
9 squats
From 3:00-6:00, perform 3 rounds of:
4 pull-ups
8 push-ups
12 squats
From 6:00-9:00, perform 3 rounds of:
5 pull-ups
10 push-ups
15 squats
From 9:00-12:00, perform 3 rounds of:
6 pull-ups
12 push-ups
18 squats

Etc.

Continue for as long as possible until you cannot complete 3 rounds within the 3-minute window. Every 3 minutes add 1 additional pull-up, 2 additional push-ups and 3 additional squats.