First of all- I really liked the aesthetic of this game.
But wow, I was really, really bad at this.
I know it’s cheating, but I asked someone else to play with me, and we actually had quite a bit of fun; where the shared health bar makes you a bit more invested in their screen than you’d normally be.
I think if you want to make it a bit more accessible, you might be able to do so by timing the enemies so you don’t have to do two things at once. You might then take this further and add a bit of risk/reward by making it so you can take a risk of having to coordinate both characters under attack at once because you’ve taken the reward of not immediately dispatching one character’s wave of enemies because you’ve gone to pick up a power up.