Easier setup for flea brew memoriam jump. Dash at that little corner, do 3 full hops and 2 slashes. Jump and flea brew to get as much height as you can. Buffer the jump and right keys out of flea brew. Hope that helps! Thanks to Fallen for finding and posting about this earlier.
EDIT: You'll know if you dashed at the corner correctly if you don't drop fast. I find that it works better for me if I hold left after the wall jump and if jump is pressed slightly after or really close to the end of the flea brew air stall. On the latest patch, this works cloakless, but it's more difficult.
The way this walljump works is that you use flea brew to gain more height than a normal jump to be able to reach a jumpable wall. This used to only be possible with cloak because of how it let you jump further and lower from a wall. This changed recently in 29909+ (making this possible cloakless), all walljumps work like cloak walljumps now, except for the fact that only cloak can buffer jump inputs.
How to do this jump
all testing done on 60fps
I chose to stand at the horizontal position of roughly 17.238 for testing this jump (image shows where to stand, look at environment for visual cues) when jumping make sure to brew so that you go to a vertical position near 25.02 (24.95 and 25.05 seem to be the extremes for values that work) while brew is still in effect I hold right and don't hold jump jump needs to be pressed on the frame (or frames after) hero state becomes airborne and are in the vertical range mentioned previously after pressing jump, keep holding jump and right as that will land on the ledge above the jump input will not work if the hero state is no_input (spamming might help, but it didn't work for me) if you correctly timed a jump after airborne appears the jump can still fail if you are too low (missing the wall) or too high (bonking on the ceiling)
I don't know what else I should put here but I thought it would be good to have something to look at if someone wants to attempt this jump
Found a consistent(ish) setup for the Wingless Memorium entrance flea brew skip. The skip seems to only work with this setup on 60fps, higher FPS values cause a bonk when attempting the jump (tested on 120, 144, ~300, and 900+). For this setup, Hornet's x-position needs to be very close to the value in the video and I couldn't find a consistent way to get her here, but the video has the info panel open so you can see the right spot if anyone wants to try to find another setup
I use two visual cues to find this spot and just walk into it, shown in the second picture, using Hornet's needle. I look for the back of the needle to touch the inner part of the sign, and the front of the needle to point at the final green spec on the ground
For the skip itself, just jump and flea brew, then buffer right + jump. You can hold these inputs, and buffer them shortly after the flea brew. I don't know how precise the brew timing is, but the skip is very consistent from the spot shown