>>723189646
There are techniques you can use, such as certain movement patterns. What I find fun about shoot 'em ups is discovering tactics that work, when you gradually develop a strategy that, if executed correctly during the game, yields good results.
For example, at a certain point, you realize that if you make a U-shaped movement, you attract the shots from one of the boss stages in a way that makes it easy, so when you're in that part, you apply your U-movement tactic, and as soon as you pass that specific boss stage, you quickly adapt to what comes next.
I find this interesting, but things don't always work that way. At higher levels of gameplay, you start to enter the realm of pure memorization (I think, I don't have the ability or patience to reach extreme levels of gameplay), and then I get the impression that the game starts to feel more like speedrunner autism than something dynamic and interesting.