Added Akira & Extra Battles (Vs Mutants & Mecha)

Well, I made another update where I added Akira to join the battle. But she's only available in 'VS CPU' Mode and 'Extra'

'Extra" is where I was having fun to make a battle with enemies, Mutants and Mecha. Choose 4 characters and the battle begin. 

I hope you enjoy. And it's not just a game. It's an experiment.

Thank you.