Oh, sorry, that might have been a bit confusing. Yeah, the life is on the top left and the countdown is in the bottom. I had wanted to make a more detailed tutorial but ran out of time.
Those falling rock things, I think you refer to the plant disguise enemies, you can kind of jump up and activate their jump before moving out of the way. For the shooting enemies, you kind of just have to dodge or jump out of the way.
I'll make a full gameplay video to help people soon.
But thanks for playing!