"The fittest will survive" is our game's scope. When you start the game you only have basic actions with a very simple usage, melee attack, parry with skilled time, jump and roll dash.
During your adventure in the game, you can find places where you can't access or find enemies that you can't beat. If you die you will restart, but with a brand new corpse, with the 4 basic abilities morphed.
Sometimes in a better skill.
These traits are transmitted with the usage of the skill, the more you use a skill, the more you gain an advantage of that: for example, jumping becomes double jumping but you may lose the ability to walk normally because you've abused jumping too much.
And now ?
Our world is open to you and to your choice: what skill you will chose to go up and what to let go down to reach all content in our world?