How to play octopus dare

I will be explaining to you how to play octopus dare.
Octopus dare is a game where the objective is to beat the octopus and get the treasure at the end of the game.
Apparently it's a difficult game because no one except Dinah could end it.

Well, in the first stage you will be like a ship and you have to avoid some shoals that will be "killing" you if you crash with them. Then you will be a submarine and you will have to beat the OCTOPUS-S-S-S you will have to avoid his tentacles and survive until you can get the treasure. If he kills you, you will have to start the game again...