Challenge completed - 270 reps:

5 min treadmill (0.8 km) (0)

12x3 squats (36)
10+10+8 lunges (28)
16x2 burpees (short brake) (30)
12x3 kettlebell swings (36)

4min continuous plank (each of the four types) (48)
16x3 reverse crunch (48)
10x2 similar exercise like above, except legs "scissoring" (20)
8x3 ab machine (24)