4x20m resisted runs
4x20m sprints

4 x 10 tire flips
4 x 10 tire jumps

On a minute interval do one rep of the following exercises for very minute (first minute you do one rep of each, second minute you do 2 reps of each, etc) until you can no longer complete the reps in the round:
Pushup
Burpee
Pullup