After ironing out an ad-hoc TAS engine for the game, I completed a respectable TAS that improves over our RTA record by 25 seconds IGT. I hope you enjoy: https://vimeo.com/309156733

I'd be happy to answer any questions, and if anybody is interested in taking their own shot at TASing I'd readily share my tools. A basic familiarity with JavaScript would come in handy.

@SiriusAshling: I used the strategy you found to charge an extra dash after slamming into a wall in a few places. You suggested in your videos that is was necessary to change directions after slamming into the wall before you jump, but this seems to not be the case; your horizontal directional input seems to not affect your window.

In general, the game is very casual about letting you jump after you leave the ground in any way other than jumping. For example, on level 1 I charge a dash by jumping shortly after I leave the center platform. Just pressing x after my dash animation dies above the chasm wouldn't have worked, but pressing up and x together on the same frame does. It seems like you always have a ~ 100 ms window to jump (5 frames for me) after leaving a ground surface.

Really sick. Nice going. Any plans to do similar TAS vids for the other games in the series?

Thanks! I'm thinking of doing Choppy Orc next. The runners on that game have already done some clever innovation, so I'm excited to see how well I can improve the run.