(since 18-2-2023) Can only achieve 598, meh...
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(13-6-2023) Seeing alazeh's comment I returned to this one. Initially I thought I lost steps on the left side as it appeared to be the most challenging part, but after too many tries, I can't cut down steps further.
I really lost 4 steps in another room... mehmeh
Just like yokosooo, I can only find 598. Was badly stuck at 600+, before that, and yesterday on 600 sharp. Will keep looking in hopes I can find sspenst's 594, too. I find this a very interesting level, where difficulty varies, so you can ''relax'' in some rooms, and save the brain energy for the others. I hope I'm not relaxing too much and losing in an ''easy room'', lol. :)))
(sometime in March, 2023) Very nice loopings. :))
EDIT (an hour later): looking for yokosooo's 388, but can only 390 it, atm.
Great find, yokosooo. :)
EDIT 2 (7th June, 2023): been two off, for a long while, now. Feels like I've tried everything, but it's all just 2 off. Huh. :/ Will keep looking, anyway. :)