Four locations across the top, Cool-Mart, Cauldron, Kingdom and Dungeon, and one number that matters: your level. Everything you do anywhere feeds experience, and levelling makes every location a little stronger, so the game is about spreading attention rather than optimising one track.
The help tab is written properly and grows as you unlock things, which is rarer here than it should be. It is also in early development and warns you on the front screen to wipe your save when it updates, so treat a run as a run rather than a save you keep. A couple of hours of real content.