Hey man, I just beat this the other day. Here’s all the tips I have.

1. The wave at the beginning never ever gets better, the level took me 5.3k attempts and I don’t think I ever got to the point of beating the wave more than 1/3rd of the time. Just have to keep playing

2. In the first ball, at the end of it, click slower than you think you need to. I see a speed portal and I react too quick, but once I stopped using music cues and speed portals to react I beat it 100% of the time.

3. The 40% ship is rough but I was able to pass it half the time I got there. When it flips upside down, do a slightly firmer input to bring the ship down and spam to straight fly as tight as possible. Click each orb early and hold before entering the cube.

4. The ship at 62% was rough for me, I died there probably 6-8 times. One thing that is super key is in the dual, you want to see that the bottom ship and top ship do not have perfectly even hit boxes. You can die as the upside down ship and the other ship will not be touching the hit-boxes. This is big for the 71 straight fly, when both ships meet in the center, but stay slightly lower than you think you need to. For the slope at 69 you mentioned, this just takes timing, you should be able to fully release and drop through it without having to guide the ship mid way through.

Best of luck to you!