Pretty happy with how the run went although there were a few scuffed sections. The beginning of Fighting was a mess, there was a uncomfortable period in the middle of Revealing where I was losing speed with no reachable winds or boosts and at the beginning of the final section I got close to crashing. In Revealing I prefer to mostly stay on the left side as I was familiar with the generation and where the boosts and winds regularly appear, but I took a path to the center and had to get back to the left as soon as I got the opportunity. Most notably there was a sphincter clenching moment in Softening, the third to last section, where I lost most of my speed after using my power-ups and just barely reached some winds before getting stuck.
This was my second actual attempt at the achievement, the first had gone smoothly until a catastrophic mistake in Fulfilling ending the attempt about 35 minutes in. I took my time practicing the game for this as I prefer to do before attempting any deathless achievement and because Lifeslide is just a pleasant game to play.
Overall wasn't bad as far as deathless achievements go. The run takes less than an hour so it's not that punishing to fail (relatively speaking at least) and much of the game is pretty forgiving once you get used to it. Some of the harder areas (Healing, Fulfilling and Revealing IMO) do take a little bit of practice to get familiar with the level generation and have strategies for how best to path through them consistently. Fighting, Daring, Creating and Recalling can be a bit dangerous and have parts where you are moving very fast past obstacles and narrow gaps but I don't think they are that bad once experienced with the game. Recalling is certainly chokable though being right at the end of the run.