(1) There is a secret life form that can develop (if you are good enough!)
Piece of cake, and I know how to do it too.
(2) Try to develop a planet controlled by whales (seriously!)
Also a piece of cake.
(3) Populate Venus and Mars.
Too easy.
(4) Advanced civilization on Mars!
Again, too easy. Mars is way easier than Venus, and Venus isn't even all that hard.
(5) At the moment the secret life-form is created, NUKE THE PLANET.
Oh that's fun.