Adventure Game Planning 2

In this stage of brainstorming for my Adventure game I am interested in planning out my level's flow and mechanics as well as thinking about how I am going to put together simple, yet effective characters and objects.

Here is my paper map. My puzzles and challenges are not fully fleshed out here but this will be my guide.

Here I am thinking about my checkpoints and locked doors/keys.

Here I am thinking about how I can make simple enemies that will be able to animate through 'Timeline'.