The concept is really interesting, but the game itself can be a bit confusing.
I think it would be great to start slower with some kind of tutorial to explain what each button does and what the game's objective is. It would also be nice to add some actions the player could do while waiting for the powers to load (maybe dealing a little damage by clicking on the tentacles).
Anyway, congratulations! I think as a first version of the game, it looks really promising.