Kettlebell-ing

Did my first ever kettlebell overhead squat workout earlier at a local gym called REV. I knew kettlebell isn't easy but never knew it was that tough, especially working on my left arm. The entire 1hour class consisted of kettlebell +other workouts - 10 ring pull ups, 10 push ups & 15 squats, as many rounds as possible within 15mins (or was it 20, 30 mins?). My achievement was 10 rounds. My proudest was total of 100 push ups, all on my toes...my personal best to date. Am starting to feel some soreness now.