First of all, thank you for trying out my game, it means a lot. It is a bit of trial and error, and needs proper timing and situation to complete it. Basically you have to use your lower platform as a safe spot and using the tiny creatures to bounce high enough to avoid the horizontal spinning blade. A little platform is there as a help, if someone would like to use it.
I had some luck with killing those two the same time, but it's not the intended way, the only thing I'm not happy about is the timing of the spikes and the elevator, you have to wait so much time to properly make that jump and fast, so I'll consider to balance this level.