Hello, This "gametype" is only for hardcore or very good player:
CPM Challenge Pro Mode (HardCore)
Every Player will only get 1 Life, this mean as Human/Alien if you die once, you will spectate the whole round ! waiting the next one !.
As i've said it's only for great player, and don't worry as alien you can evolve without dying but that's hardcore xD.
Ps: This Difficulty should contain achievement(?)