You have set 1,000,000 bombs. Some say you need to get to round 99 about 100 times to get this. Some will even say 117 times. I went nuts dropping bombs with all my powers and did 100,000 in 8 X 99 rounds. Gonna take a while either way. No sense going nuts dropping bombs if your going for all the cheevs. It takes longer to get the brick cheevs anyways. I did some counting and 48 bombs is the most you can drop at once. 165 is the max soft blocks you should see on a round, example level 20, 40, 60, 80 and some others.