Actually 1st level is pretty easy, just gather two red squares, then double jump to the gate, do not use the other platform. That platform is there for you to go on it, and die. After dying once, game waits from you to learn that you should not use that platform. The only design problem is the life system, i think. And if its possible i will reload the game without it but i am not sure about the rules, so i wont.