Nevermind, I figured out how to complete Level 2. For anyone struggling, first use the Earthquake on the middle piece of Earth and then create a fissure on the left part that's stopping the piece of metal.
I don't care for this game to be honest. Pressing 1 button? If that's all I can do, everything else is up to probability. And what's fun about that? 2/5
@Andrew I think I get it now: is the number reflective of the total number of mutants spawned and not the "current mutants that are alive"? If so then I understand.
I'll keep posting this until I get a valid response: mutant death rate = mutant spawn rate and mutants still continue to spawn. Mutant death rate > mutant spawn rate and mutants still continue to spawn. This makes no sense...
Thanks :)