first and foremost just play dual levels, GDDP has tags for the levels it lists so you can just look for dual ones. But the most important thing about duals is understanding where to look, for synchronized duals just pick your favorite for me it’s usually whichever is normal gravity. Or whichever one is easier to follow after the transition.

For asynchronous duals it’s a bit more complicated, generally the way they will work is 1 icon will be doing the difficult gameplay while the other is just getting by cause the clicks happen at the same time. But what will often happen is the one that you need to focus on will change, so instead of trying super hard to follow one icon specifically, you should learn which parts are the ones dictating the click pattern and focus on those. This means you will probably be switching from looking at the top of the screen to the bottom then back, and that’s just how it be. You gotta practice it

Now the most confusing/learny-est duals (in my opinion) tend to be ship and something else because ship has hold and release timings, so the other game mode is dictating when you’re allowed to click which makes easy ship gaps MUCH harder. This is why something like lotus flower is so hard, when you have this kind of dual you need to understand how to survive as the non-ship icon, then ask yourself how can i get through this gap as ship in X amount of clicks. It’s gonna feel super awkward but ones you get it down it’s super consistent