Hi TailorGhost, you are right, in the easiest levels its more intuitive to complete it with only one character, but as you progress in some of the levels they are build in  a way that makes more sense to clear one side with one player and the other side of the level with the other player.  Just like in a real Symbiosis, both parts dont always bring the same effort.

But yes a 2 player co-op or online multiplayer would have been ideal if I had more time and more experience xD

Thank you!, I have to explain that a little better I think xD

The two characters have to meet at the center after collecting all the stars. first 2 levels are easy but 5th is impossible lol