A,
Box Squat 1x1

Use the heaviest weight you can for each set.
Rest as needed between sets.

B,
5 rounds for time of:
5 Back Squats, 125/84kg
10 Dumbbell Floor Press, 32,5/22,5kg
5 Ring Muscle-ups
10 Toes-to-rings

Goal
Sub 18 mins

C,
3 rounds for quality of:
Banded Plank Hold, 30 secs
Arms Overhead Hip Hinge Hold, 20 secs
L-Sit Hold, 10 secs
Rest 2 mins