I spent some time trying to optimize the reactor, and I wasn't able to find a better order, so that's what's in the record now. Also, today I found this amazing skip (will upload a better any% run with it soon): https://clips.twitch.tv/madewokherd/CrazyGaurStrawBeary
I also saw you damage boosting in other rooms. What you could try, because getting hit always knocks you in the opposite direction to the way you're facing (and up slightly), is right before turn away from the thing your going to hit or back into it while drilling, that way you effectively get knocked into the direction you were moving. Not sure how effective it can be in a speedrun but it's something to try.