Aerial Ace

This whole WQ and the subsequent achievement is proof that Blizzard does not test any aspect of their game, nor do they understand their own engine limitations. Everything about this is awful.

For the love of all that is holy, please add a RETRY button!

This achievement became significantly easier with a solid reference frame. As such, I 'created an addon' https://imgur.com/CGxEDTL using my damage meter. Due to latency/input delay I made this damage meter reference box located lower, and to the right, of my character. Whenever the box touched the lower spears I jumped. Play around with the box, make it a line - whatever works. It seemed frustrating guessing where your hitbox is and apparently dying for no reason.

There is 2 tight pinch sections in the course where I think it is incredibly helpful to use your second action button "Soar" to get through easily. Let me try explain.
1) There is a drop near the start of the course, followed by a single-jump stair section. Use Soar at the top of the stair section where it flattens and pinches.
2) After this, there is a second, slightly larger drop, followed by a double-jump stair section. As before, at the top of this section use Soar, and then the course is basically over.

This is a fun achievement; however, the very first input of the course is rigged. If you spam Flap, then you double jump and instantly die. If don't instantly Flap, you die. I suggest watching when the first action button "Flap" lights up and immediately pressing it over watching the timer.